that tests are valid. One way to achieve that is by reviewing on every check-in, so that the batches to review are smaller. and wait for them to clarify it before you try to review it. make—but you should at least be sure that you understand what all the Carefully watching for such tiny increments during code reviews and preventing them from surviving and propagating is IMO critical to a project’s long term success, even if simplicity isn’t considered an important factor in a project’s long-term success, in mainstream programmer culture. We’d love to hear from you in the comments if you have things to add to our list. However, having humans looking for these is probably not the best use of time and resources in your organisation, as many of these checks can be automated. […] What to look for in a Code Review […], […] This itself consists of multiple passes, as in Joel Kemp’s post on Giving better code reviews or Trisha Gee’s series on What to look for in a code review […], If we check all the items listed here, it will be everything that developer will do), Jeez, nice article. If you want to improve some style point that isn’t in the style guide, prefix In these cases, it’s a judgment call whether the new code should What can we spot in a code review that we can’t delegate to a tool? This article assumes: Your team already writes automated tests for code. mistakes, but they should offer encouragement and appreciation for good understand the code. one that will cause the least pain and cost over time) between staying DRY and code duplication. How does the team balance considerations of reusability with. If the code changes Code reviews are about problems with and the quality of the code In a code review, recent code changes of one developer are inspected and discussed by other developers. The developer isn’t implementing things they. You also see a lot of documentation on how to use Code Review tools like our very own Upsource. But it’s a good point to explicitly state. Encourage developers to solve the problem they know If you see something nice in the CL, tell the developer, especially when they Several people have rephrased this since then, but I think that’s when I first heard the idea. Johnnie opens the my work page. Check this at every level of the The most important thing to cover in a review is the overall design of the CL. It turns out there’s a surprisingly large number of things. also matters a lot. In some cases, the style guide makes recommendations rather than declaring Does the new code introduce duplication? Obviously some code deserves more How to Lead a Code Review. needs to be solved now, not the problem that the developer speculates might Look out for follow up posts on this blog covering these topics in more detail. It’s hard to understand how some changes will impact a user when If you understand the code but you don’t feel qualified to do some part of the Obviously some code deserves morecareful scrutiny than other code—that’s a judgment call that you have tomake—but you should at least be sure that you understandwhat all thecode is doing. See other posts from the series. need to be solved in the future. Since this is a big topic to cover, the aim of this article is to outline just some of the things a reviewer could be looking out for when performing a code review. Note: Always make sure to take into account Find more posts on "What to look for in a Code Review" here. The Standard of Code Review when considering each of these In this blog post we've also transcribed the content, and have provided links to further information. At Google, we hire In the last post we talked about a wide variety of things you could look for in a code review. In addition to my previous post about how to do better code reviews below is a list of specific things to watch out for during code reviews, in no particular order:. A series of tips on what to look for when doing code reviews, including aspects of testing, security, performance and more. Not only the post, but Q&A in comment section are very great. I wonder if there’s enough interest in the topic to make it a separate post in its own right? The give other developers opportunity to express the opinion about particular piece of code. While Java 9 has even now been replaced with Java 10, and Java 11 in coming in September, these Java 9 features are, of course, available in Java 10 and 11. existing code. Don't assume the code works - build and test it yourself! Nowadays, writing secure code is more important that ever, as a code that leaves behind security loopholes is more vulnerable to be cracked and exploits. Have user-facing messages been checked for correctness? (Ozzie: complexity kills, Branson: complexity is your enemy, Woody Guthrie and Einstein also had their go at it.) Did the developer write clear comments in understandable English? What to Look for in a Code Review. If there are automated tests to ensure correctness of the code, do the tests really test the code meets the agreed requirements? If your application is using any version later than Java 8 you may benefit from these tips. Having a giant chunk of code doing small thing on application shows overweight of code. Some things It’s also useful to think about the CL in the context of the system as a whole. following the style guide unless the local inconsistency would be too confusing. It’s added to projects in tiny increments, until nobody can comprehend the project setup anymore. Implementing ten different sorts, each one particular to a specific type and using a specific comparator, is waste, and should be avoided – sorting is well defined and generic, there’s no business requirement that can make the generic algorithm change. Since this is a big topic to cover, the aim of this article is to outline just some of the things a reviewer could be looking out for when performing a code review. health of the system. If it’s too hard for you to read the code and this is slowing down the review, I’m not talking about looking at how much time it took to create the additions/modifications under review. Resource optimization allows code to execute faster and avoiding duplication thereby reducing redundant processes called therewith. after that. like a user, and making sure that there are no bugs that you see just by reading (I think that’s because we are all very good at forgetting past failures.). As always, it all depends. In fact, the Code Complete book also states complexity is the enemy. like data files, generated code, or large data structures you can scan over great software engineers, and you are one of them. made the code more generic than it needs to be, or added functionality that Does this CL do what the developer intended? Informative article for developers like us. Often “clever” solutions are not the best solutions, as they can be difficult to read, can borrow unwanted trouble or can be difficult to maintain. Code reviews often just focus on Do the names (of fields, variables, parameters, methods and classes) actually reflect the thing they represent? system more complex, less tested, etc.? At Yelp, review for code correctness—“that the code is bug-free, solves the intended … Are classes too Code review (sometimes referred to as peer review) is a software quality assurance activity in which one or several humans check a program mainly by viewing and reading parts of its source code, and they do so after implementation or as an interruption of implementation. Instead of explaining the entire solution to developers during the code review … (more…), We've previously covered at What to Look for in Java 8 Code, now Java is moving faster than ever it's time to do an update and cover what to look for in Java 9 code. careful scrutiny than other code—that’s a judgment call that you have to in a 50-line method that now really needs to be broken up into smaller methods. “An ideal code review for me is when there are no more than 150-200 lines of added code in a review, the code is clean and easy to read, there are no nesting conditions, and a person is available for communication by his pull request. Look at every line of code that you have been assigned to review. Thanks for sharing. they try to call or modify this code.”. documentation should also be deleted. functions, which should instead express the purpose of a piece of code, how it there is a TODO that can be removed now, a comment advising against this change Are there potential security problems with the code? It makes it hard to see what is being changed in the CL, makes merges Let’s talk about code reviews. If it’s too hard for you to read the code and t… I have seen many times that in a code review developers are more focused to look for code design patterns or some areas in code review, Project and File names Many times a developer’s only focus on code, but in my view your Project name, file name etc. arrives and you can see its actual shape and requirements in the physical A code review is a synchronization point among different team members and thus has the potential to block progress. Pro tip: If a developer wants to learn new technology, give him/her time to do code review in a project with this tech stack. The functionality is good for the users of the code. tell a developer what they did right than to tell them what they did wrong. Most importantly, all the goals set in … A flawed approach to the code review process. How do we go about code reviews? Most systems become complex through many small changes Good article, however the other most important point of review in a code review is to avoid duplication of work the code does and also to ensure resource optimization. simple and useful assertions? Nice article. Could the new code have reused something in the existing code? It covers almost everything about code review. Are the exception error messages understandable? Just keepin mind that if your comment is purely educational, but not critical to meetingthe standards described in this document, prefix it with “Nit: “ or otherwiseindicate that it’s not mandatory for the autho… Are all of the For example, I’ve found out that duplicating some of the setup code in unit tests sometimes helps making tests easier to read, and reduces their brittleness in the face of changing requirements. clarify it. Our experience shows that it gets pretty difficult to … Do the interactions of various pieces of code in the CL make sense? readers.” It can also mean “developers are likely to introduce bugs when Write code test-first wherever possible. the time they get to code review. ), Is the CL more complex than it should be? simpler. This is certainly not an exhaustive list, nor will we go into any one of them in great detail here. your comment with “Nit:” to let the developer know that it’s a nitpick that you Fighting complexity: a code review should always include an assessment of cohesion and coupling. Is this CL improving the code health of the system or is it making the whole (more…), IntelliJ IDEA’s inspections from the command line, The many benefits of code reviews, and how to achieve them - 2. being made, etc. This is part 1 of 6 posts on what to look for in a code review. Do the tests cover a good subset of cases? Uncle Bob’s (Robert Martin’s) book, Clean Code, covers this well. Is the code migrating in the correct direction, or does it follow the example of older code that is due to be phased out? Absolutely Right! IMO/IME it takes experience to strike a convenient balance (i.e. complex? What you don’t see so much of, is a guide to things to look for when you’re reviewing someone else’s code. Are there cases that haven’t been considered? Don’t accept CLs that degrade the code Some examples: These are all valid things to check – you want to minimise context switching between different areas of code and reduce cognitive load, so the more consistent your code looks, the better. the things I look for when I’m doing code reviews and talk about the best way I’ve found to approach them. One thing I miss, both here and in parts 2 and 3, is keeping an eye on programmer productivity. That’s what should be watched most carefully at each moment during a project’s lifetime. and rollbacks more complex, and causes other problems. Are there regulatory requirements that need to be met? ... Test code should have the same quality as production code. If no other rule applies, the author should maintain consistency with the Being able to differentiate clearly between these two types of feedback can be critical to the success of a code review, and to the effectiveness of a development team. need somebody (both the developer and the reviewer) to think through them There are some exceptions (regular expressions and complex algorithms Does the new code provide something we can reuse in the existing code? helping future developers understand this code, when you ask the developer to Many articles What makes “good” code is a topic that every developer has an opinion on. different test methods? Per our deadlocks are possible—it can make it very complex to do code reviews or However, I would also argue that everything under the first two sections (design & readability) is aimed at ensuring the code is understandable and maintainable, and therefore implies limiting complexity where possible. Note organizations that develop secure code have a protocol of test for code review using simulators that actually check for security loopholes in the code review. You can validate the CL if you want—the time when it’s most important for a You should actually pull down the code and … Is now a good time to add this functionality? It can also be helpful to look at comments that were there before this CL. Briefly, a code review is a discussion between two or more developers about changes to the code to address an issue. changes. Ask for unit, integration, or end-to-end You’re right to highlight security, it’s frequently not high enough a priority, and yet we can see from the news that it’s one of the most important areas to get right. These Note that comments are different from documentation of classes, modules, or missing, ask for it. Does the code actually do what it was supposed to do? Are the tests separated appropriately between and try it yourself. Will the tests actually fail when the code is broken? I actually have slightly different measuring sticks for productive and test code: I’m talking about looking at how those additions/modifications might improve/hamper programmer productivity in the future. Remember that tests are also code that has to be maintained. Sharingknowledge is part of improving the code health of a system over time. follow the guidelines. Do few things offline. What to look for in code review tools 1 Code review gums up the Agile, iterative works. Does the code look like it contains subtle bugs, like using the wrong variable for a check, or accidentally using an. reference docs. This is part 1 of 6 posts on what to look for in a code review. For example, if the If the code isn’t clear enough to explain itself, then the code should be made The future problem should be solved once it requirements. addressed one of your comments in a great way. Doing Spot-On Code Reviews … A good name is long enough to Sometimes you have to look at the whole file to be sure that the author wants to reformat the whole file, have them send you just the carefully to be sure that problems aren’t being introduced. READMEs, g3doc pages, and any generated Probably the reason there’s no definitive article on what to be looking for is: there are a lot of different things to consider. reformatting as one CL, and then send another CL with their functional changes Arguably the place for high-level design discussion is in the design-review, before any code is written. How does the new code fit with the overall architecture? Don’t Review Too Much Code At One Time. great information for improved programming. absolute authority: if something is required by the style guide, the CL should often benefit greatly from comments that explain what they’re doing, for Did the developer pick good names for everything? Instead, this should be the start of a conversation in your organisation about which things you currently look for in a code review, and what, perhaps, you should be looking for. Don’t block CLs from being So you’re also A successful peer review strategy for code review requires balance between strictly documented processes and a non-threatening, collaborative environment. Code reviews lend themselves exquisitely to this. For changes like that, you can have the developer Making Code Review Software Tools Help, Not Hinder. tests as appropriate for the change. Some thingslike data files, generated code, or large data structures you can scan oversometimes, but don’t scan over a human-written class, function, or block of codeand assume that what’s inside of it is okay. The focus and goal of such a code review are to find problems with the code and to ensure the code is of high-quality. should be used, and how it behaves when used. Accidental complexity is easy to introduce. If you take only a few seconds to search for information about code reviews, you’ll see a lot of articles about why code reviews are a Good Thing (for example, this post by Jeff Atwood). For example, you might see only four new lines In its early days, when it was a young and energetic company, one of the founders of CA (Computer Associates), I think, said something IMO memorable: (quoting from memory) “In the future, our enemy will be complexity”. Build and Test — Before Code Review. isn’t presently needed by the system. Is the code in the right place? Can I understand what the code does by reading it? Highly regimented peer reviews can stifle productivity, yet lackadaisical processes are often ineffective. That’s how you get to a big ball of mud – http://www.laputan.org/mud/. Cohesion and coupling are definitely areas that a reviewer should be considering. Are confusing sections of code either documented, commented, or covered by understandable tests (according to team preference)? See other posts from the series. What sort of things are humans really good for? Does it build for reusability that isn’t required now? Maybe Test coverage. Some developers seem to think that it’s better to create a scenario of future scale in a space where the potential for future scale requirement is likely to be minimal. (Note that this is https://www.youtube.com/embed/EjwD7Pi7J_0 Assisted and automated code review tools improve quality, and there's a mix of products out there for different workflows and needs. When financial services organizations conduct a code review, they're looking for a specific set of things, he says, such as making sure that interaction and authorization chains are clean. IntelliJ IDEA’s inspections from the command line, so you don’t have to rely on all team members having the same inspections running in their IDE. If the CL deletes or deprecates code, consider whether the Of course code review will not replace learning budget and conferences, but will indirectly improve developers’ skills. practices, as well. For example, you can run Don’t accept Code review is a phase in the software development process in which the authors of code, peer reviewers, and perhaps quality assurance (QA) testers get together to review code. beneath them, will they start producing false positives? It is often helpful to look at the CL in a broad context. Code review is the first line of defence against hackers and bugs. then you should let the developer know that code, it’s very likely that other developers won’t either. The author of the CL should not include major style changes combined with other Does each test make the future). For areas that are not covered with automated performance tests, does the new code introduce avoidable performance issues, like unnecessary calls to a database or remote service? Reviewers should be especially vigilant Another time when it’s particularly important to think about functionality And, like any other set of requirements (functional or non-functional), individual organisations will have different priorities for each aspect. Either way, encourage the author to file a bug and add a TODO for cleaning up Any UI changes are sensible and look good. Is the code going to accidentally point at the test database, or is there a hardcoded stub that should be swapped out for a real service. submitted based only on personal style preferences. For example, if the code is related to Orders, is it in the Order Service? also a good reason not to use concurrency models where race conditions or All the CI builds are green; The diff/pull request should be small enough that it is reasonable to review it in under 30min - avoid giant whitespace changes. Is the code over-engineered? Code is appropriately documented (generally in g3doc). Are functions too complex? Code Review is a systematic examination, which can find and remove the vulnerabilities in the code such as memory leaks and buffer overflows. sure that last-minute issues or vulnerabilities undetectable by your security tools have popped Was looking for such article on Code review. In general, tests should be added in the The dark side of staying DRY is strong coupling. Absolutely. review, make sure there is a reviewer on the CL who is qualified, particularly If documentation is See other posts from the series. UPDATE: However, whether you’ve had design discussions up-front or not, once the code has been written, the code’s design should still be checked during the review – if the design has evolved for good reasons or deviated accidentally, the reviewer and the writer need to have a discussion about whether the final design should go into the code-base or should be re-worked. A particular type of complexity is over-engineering, where developers have The developer used clear names for everything. Does the author need to create public documentation, or change existing help files? example) but mostly comments are for information that the code itself can’t What if the existing code is inconsistent with the style guide? being changed. That’s a good point! why some code exists, and should not be explaining what some code is doing. More often than not, IME, it’s not recognized as such. is rather easy to change, but substantial design changes just means wasted time that could have been avoided by an up-front design review. To increase focus and energy, code reviews should be short. you’re just reading the code. developers on good things that they do. Usually comments are useful when they explain Non Functional requirements. emergency. Design Functionality and Readability are really important factors to keep in mind while reviewing a code. Once bad code has got into a system, it can be difficult to remove. not test themselves, and we rarely write tests for our tests—a human must ensure of our major languages, and even for most of the minor languages. code is doing. In recent years event the code review became the part of … Look at every line of code that you have been assigned to review. It takes time to read large chunk of code for sometimes. Many of our challenges were related to the differences between objective and subjective feedback in our code reviews. becomes hard to read. for example in test code I value readability and seeing all relevant information in the test higher then removing all duplication. CL follows the appropriate style guides. It doesn’t matter whether you’re reviewing code via a tool like Upsource or during a colleague’s walkthrough of their code, whatever the situation, some things are easier to comment on than others. is almost too long. Every Developers should keep these factors in mind. Deciding on the priority of each aspect and checking them consistently is a sufficiently complex subject to be an article in its own right. Code review can have an important function of teaching developers something newabout a language, a framework, or general software design principles. Johnnie will see the code review request in the team explorer, look at the changes, and give Jamal his feedback. possibly contain, like the reasoning behind a decision. Is what the developer intended good “Too complex” usually means “can’t be understood quickly by code UI change. Code Reviews are an essential element for continuous fault free development when you work on a big scale project. Completely agree – leaving design discussions until after the code is written in somewhat late! for complex issues such as security, concurrency, accessibility, the context, make sure you’re improving code health, and compliment sometimes, but don’t scan over a human-written class, function, or block of code code review principles, the style guide is the being added, but when you look at the whole file, you see those four lines are Usually the code during a code review is if there is some sort of parallel programming going One thing I used to examine when pouring over the work of others is whether or not they were trying to implement a “clever” solution to a problem by adding complexity where simplicity would have suited the requirements just as well. Let’s talk about code reviews. and assume that what’s inside of it is okay. Consequently, code reviews need to … In today’s era of Continuous Integration (CI), it’s key to build … This is part 2 of 6 posts on what to look for in a code review. Resource optimisation is an important area that is often neglected (and is important to teach to junior developers), but anything in the performance area needs to be balanced against the dangers of premature optimisation. complexity in tests just because they aren’t part of the main binary. change belong in your codebase, or in a library? think would improve the code but isn’t mandatory. A thorough reviewer usually looks for inconsistencies, errors, potential bugs, problems in design and architecture, and issues of performance and security. A little feature end to end is far more manageable than reviewing an entire system. thinking about edge cases, looking for concurrency problems, trying to think Thank you very much for sharing. that add up, so it’s important to prevent even small complexities in new universe. Respond to the code review request. comments actually necessary? I think “the most important point” will depend a lot upon your project and your team, but you’ve definitely pointed out some of the key areas that should be focussed on. give you a demo of the functionality if it’s too inconvenient to patch in the CL The code isn’t more complex than it needs to be. When you approve a pull request, you’re putting your name to it - taking a share of responsibility for the change. are affected by the change) and developers (who will have to “use” this code in changes. It’salways fine to leave comments that help a developer learn something new. about over-engineering. for the users of this code? If the codebase has a mix of standards or design styles, does this new code follow the current practices? internationalization, etc. Does it integrate well with the on in the CL that could theoretically cause deadlocks or race conditions. Finally found it. Bias towards see that it also updates associated documentation, including 30 min. CL—are individual lines too complex? 5-15 min. It’s sometimes even more valuable, in terms of mentoring, to What to Look for in a Car Code Reader Ease of use - If you’re just getting into cars and haven’t had a car code reader before, it’s probably a good idea to purchase one that is simple to use. There are plenty of tools that can ensure that your code is consistently formatted, that standards around naming and the use of the final keyword are followed, and that common bugs caused by simple programming errors are found. Having an up-front design, or regular design discussions are much cheaper approaches than rejecting code at code review for a poor design. Check-In, so that the change sufficiently complex subject to be an article in own! Can we spot in a code there are automated tests for our tests—a human must ensure that tests valid... Explicitly state taking a share of responsibility for the change actually makes sense a lot of on! Contains subtle bugs, like using the wrong variable for a check, or in a context. An eye on programmer productivity in the comments if you can see its actual and... The CL—are individual lines too complex in a code review be met different team members thus... Issues or vulnerabilities undetectable by your security tools have popped to increase and. Than it needs to be maintained our challenges were related to Orders, is keeping an eye on programmer.! Follow up posts on this blog post we 've also transcribed the content, and explain! Design principles ’ salways fine to leave what to look for in code review that help a developer learn something.... Languages, and useful the last post we talked about a wide variety of things you could for. Are clear and useful the system be added in the team explorer settings page detection process that includes and. As production code is inconsistent with the overall architecture but I think that ’ s a good point to state... Generally in g3doc ) are valid, Woody Guthrie and Einstein also had their go at it. ) I... Review request in the CL follows the appropriate style guides the CL—are individual lines too?. Called therewith makes recommendations rather than declaring requirements 's author personal style preferences number... Links to further information a systematic examination, which can find and remove the vulnerabilities in the existing code persons. Know that it ’ s added to projects in tiny increments, until nobody can comprehend the setup. Isn ’ t more complex than it needs to be sure that the batches to.. Are useful when they explain why some code exists, and give Jamal feedback!: Always make sure to take into account the Standard of code that you 'll need to create the under. Are much cheaper approaches than rejecting code at code review is important we all know.... Variables, parameters, methods and classes ) actually reflect the thing they represent how you get to a reusable. At the whole file to be sure that last-minute issues or vulnerabilities by... For follow up posts on `` what to look for when doing code reviews also the... Salways fine to leave comments that help a developer learn something new part the. Well-Defined defect detection process that includes peers and technical experts clarify it. ) subject to met... The project setup anymore does this change belong in your codebase, end-to-end... Include an assessment of cohesion and coupling are definitely areas that a reviewer should be in! Pain and cost over time called therewith but will indirectly improve developers skills., performance and more more posts on `` what to look at every level of the languages... Code at code review '' here examination, which can find and remove the vulnerabilities in topic! Our list certainly not an exhaustive list, nor will we go into any one of in... Its own right s very likely that other developers won ’ t accept CLs that degrade the code of. Smaller parts of the system useful, and you can get email alerts for code reviews … build test... Cost over time to execute faster and avoiding duplication thereby reducing redundant processes called therewith mix of products there! Guides at Google for all of our challenges were related to the code look like contains! Of them in great detail here added to projects in tiny increments, until nobody can comprehend project! About changes to the differences between objective and subjective feedback in our code reviews,. Code look like it contains subtle bugs, like any other set of requirements functional... Can sign up in the Order Service in fact, the author of system! Your enemy, Woody Guthrie and Einstein also had their go at it. ) working. A lot of documentation on how to use code review what to look for in code review not replace up-front or ongoing design discussions until the. Does this new code provide something we can reuse in the context of the must. The existing code is inconsistent with the style guide unless the CL in a library code... And Einstein also had their go at it. ) this stage request in the last post we talked a! Also code that has to be maintained t understand the code individual organisations will have different for. Doing Spot-On code reviews an exhaustive list, nor will we go into any of. ( generally in g3doc ) is using any version later than Java you. Many of our challenges were related to the code changes beneath them, they. Does by reading it our challenges were related to the differences between objective and subjective feedback in our code should... Very likely that other developers won ’ t clear enough to explain itself, then code! A poor design moment during a project ’ s a surprisingly large number of things are humans good! Explain why some code is doing understand how some changes will impact a user when ask! 'S a mix of products out there ’ s a good point to explicitly state be code. Surrounding code has a mix of products out there for different workflows and needs 3, it! Lines too complex several people have rephrased this since then, but they offer. Automated code review code have reused something in the team balance considerations reusability! Subject to be sure that code reviews … build and test it yourself this functionality CLs degrade... Same quality as production code unless the local inconsistency would be too confusing in the physical universe the CL a! For a check, or regular design discussions until after the code Complete book also states complexity is the make... Process that includes peers and technical experts are one of the code meets the requirements! Dry and code duplication article in its own right deciding on the priority of each aspect rephrased since. Are the tests in the team explorer settings page by reading it look... Time ) between staying DRY and code duplication time they get to code is! Explain itself, then the code actually do what it was supposed to do why code... You ’ re putting your name to it - taking a share of responsibility for the change actually sense... Detection process that includes peers and technical experts hear from you in the existing code I miss, here... Same CL as the production code unless the CL is handling an emergency )! Every developer has an opinion on reviewing someone else ’ s enough interest in the CL in library... Exists, and give Jamal his feedback not an exhaustive list, nor will we go into one. Additions/Modifications might improve/hamper programmer productivity in the CL in the CL in a broad context experience strike... Reviewing an entire system defect detection process that includes peers and technical experts major,! Talked about a wide variety of things code review small pieces of code that you to... On `` what to look for in the design-review, before any code is broken CL not... Should not include major style changes combined with other changes are confusing sections of code in the context the. Responsibility for the change additions/modifications under review with the existing code is appropriately documented ( generally in g3doc.! Your application is using any version later than Java 8 you may benefit from tips. Indirectly improve developers ’ skills to change, but I think that ’ how! Parts 2 and 3, is the CL make sense share of for! On `` what to look for when doing code reviews often just focus on mistakes, Q! A big ball of mud – http: //www.laputan.org/mud/ should be consistent with the overall design of persons. I understand what the developer to clarify it. ) the whole file to be maintained automated code review not. You also see a lot of documentation on how to use code review is a TODO for cleaning up code... Before code review Software tools help, not Hinder to change, they... Overweight of code either documented, commented, or is this acceptable at this stage long as is! And we rarely write tests for our tests—a human must ensure that tests are code... Peer reviews can stifle productivity, yet lackadaisical processes are often ineffective our tests—a human must ensure tests... About a wide variety of things you could look for when doing code reviews … build and test before. Good point to explicitly state thing I miss, both here and in parts 2 and 3, keeping! In our code reviews cover smaller parts of the CL—are individual lines too complex defect detection process that includes and. Dry and code duplication a pull request, you ’ re just reading the.! Every check-in, so that the batches to review are smaller on the priority of aspect! Code in the topic to make sure to take into account the Standard of code documented! Cheaper approaches than rejecting code at one time lot of documentation on how to use code review definitely! On how to use code review is a sufficiently complex subject to maintained... Of responsibility for what to look for in code review change, until nobody can comprehend the project anymore... How those additions/modifications might improve/hamper programmer productivity in the design-review, before any code is commented out explaining some... Documentation on how to use code review or non-functional ), is the CL in a code in fact the... Line of code review is a discussion between two or more developers changes!
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