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• Good fix vs Quick fix [duplicate]

  - by Andrea Girardi

  This question already has an answer here: Does craftsmanship pay off? [duplicate] 16 answers Good design: How much hackyness is acceptable? [duplicate] 9 answers How do you balance between “do it right” and “do it ASAP” in your daily work? 14 answers Let's start from this principle: quality is a feature that you can't add to a project in the middle of the development process. This is the scenario: two weeks to go live with my project and, one of the developers added a specific method used only for one web application to our framework (Our framework is a bounce of java classes used to extract content from MongoDB, Alfresco, mySql and it's used by web applications). I'm the team leader and I told him to generalize the method to keep the framework to keep reusable but he said "no, I prefer don't do that because there are a lot of bugs that need to be fixed". The manager is agree with him and of course I'm not. Is it better to made extra effort to keep a framework free from any specific implementation (probably used only by one web application) or just add the methods because it works? So, my question is: is it correct to write code that only works or is better to write code that works but it doesn't sucks (i.e. adding embedded value, specific methods, extra classes, add column to database, etc)? How is it possible to justify the extra time (to be honest, this kind of fix requires 10 minutes extra to write a good generic code) to the management? How is possible to argue it's the right way to write code to young developers and PM? in general, good fix or quick fix? Ah, 10 minutes after I get the email from PM, he asked me why on a url of application 2 there was the name of application 1 during the login? I like to quote Jeff Atwood: "Don't leave "broken windows" (bad designs, wrong decisions, or poor code) unrepaired. Fix each one as soon as it is discovered. " Excerpt From: Hyperink. "How-To-Stop-Sucking-And-Be-Awesome-Instead." iBooks.

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• How to evaluate the quality of Rails code?

  - by Fortuity

  In a code review, what do you look for to assess a developer's expertise? Given an opportunity to look at a developer's work on a real-world project, what tell-tale signs are a tip-off to carelessness or lack of experience? Conversely, where do you look in the code to find evidence of a developer's skill or knowledge of best practices? For example, if I'm looking at a typical Rails app, I would be happy to see the developer is using RSpec (showing a commitment to using test-driven development and knowledge that RSpec is currently more popular than the default TestUnit). But in examining the specs for a Rails model, I see that the developer is testing associations, which might indicate a lack of real understanding of Rails testing requirements (since such tests are redundant given that they only test what's already implemented and tested in ActiveRecord). More generally, I might look to see if developers are writing their own implementations versus using widely available gems or if they are cleaning up code versus leaving lots of commented-out "leftovers." What helps you determine the skill of a Rails developer? What's your code quality checklist?

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• "Virtual Machine Manager" and "Virtual Machine Server" setup manual

  - by urtihu

  Is there a manual available that covers the proper setup of a "Virtual Machine Server" with no GUI with an Ubuntu Workstation with a GUI and "Virtual Machine Manager" installed? Both are 12.04 version. I get the following error message: unable to connect to libvirt Verify that -The libvirt-bin package is installed -The libvirt daemon has been started -you are a member of the libvirtd group the package is installed for some reason starting the daemon seems to crash libvirtd start info: libvirt version 0.9.8 error: virExecWithHook:328 : cannot find 'pm-is-supported' in path: No such file or directory also qemucapsInit:856: Failed to get host power management capabilities So I guess I did not set the server up correctly. All manuals I found do not mention "Virtual Machine Manager". I only chose the packages to connect with SSH remotely and the "Virtual Machine Server" for the server installation. So I would like to find a manual that covers this combo or then covered only GUI machines that have both on the same machine, which will not really help with system performance as a hypervisor.

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• What tools do you use to let you know that methods in your codebase are getting too long?

  - by blueberryfields

  Most people seem to agree that long methods are a code smell - a sign something may not be quite right with the code contained in them. Which tools do you use to detect this smell? clarified title based on responses. also, remember: Your code will live over time, and be edited by multiple programmers Emergency fixes and changes will come in, late at night, when the writer is too tired to pay attention to smells Different programmers use different tools. A contractor with 4 screens set at maximum resolution will have a different idea of acceptable method size In this context, I'm looking for tools and methods which go beyond looking at the size of a method when it's written, or when it's being edited.

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• Code Review tools - to use or not?

  - by liortal

  On my dev team, we're doing code reviews, however not in a proper way i believe. The issues our process suffers from: Not enough time is allocated for proper code review. Doing reviews is not mandatory - many times it is simply not done. Devs sit together for reviews, due to lack of another easy mechanism for doing it "offline" without spending both developers' time. My question is: can integration of a tool for code reviews improve the points mentioned above? Is it not needed? I would love to hear from positive/negative experiences.

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• c++ ide & tools with clang integration

  - by lurscher

  recently i read this blog about google integrating clang parser into their code analysis tools This is something in which c++ is at least a decade behind other languages like java, but now that llvm-clang is almost c++ iso-ready, i think its possible for c++ code analysis tools to begin using the c++ parser effectively, since it has been designed from the ground up precisely for this so i'm wondering if there are existing open source or known commercial projects taking this path, integrating with clang to provide higher-level analysis tools?

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• Where should I start reading AngularJS's source code?

  - by Abaco

  After reading this article I realized that I really didn't read any "serious" source code during my 3-years as a professional developer. Recently I started a new web-project which makes heavy use of AngularJS, so I decided to start my reading - or, better, decoding [as the blogger wrote] - activity from something that is both challenging and professionally useful. Now I just need to be pointed in the right direction. Should I just start from the start of the source code or is there a better starting point?

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• Distinguishing repetitive code with the same implementation

  - by KyelJmD

  Given this sample code import java.util.ArrayList; import blackjack.model.items.Card; public class BlackJackPlayer extends Player { private double bet; private Hand hand01 = new Hand(); private Hand hand02 = new Hand(); public void addCardToHand01(Card c) { hand01.addCard(c); } public void addCardToHand02(Card c) { hand02.addCard(c); } public void bustHand01() { hand01.setBust(true); } public void bustHand02() { hand02.setBust(true); } public void standHand01() { hand01.setStand(true); } public void standHand02() { hand02.setStand(true); } public boolean isHand01Bust() { return hand01.isBust(); } public boolean isHand02Bust() { return hand02.isBust(); } public boolean isHand01Standing() { return hand01.isStanding(); } public boolean isHand02Standing() { return hand02.isStanding(); } public int getHand01Score(){ return hand01.getCardScore(); } public int getHand02Score(){ return hand02.getCardScore(); } } Is this considered as a repetitive code? providing that each method is operating a seperate field but doing the same implementation ? Note that hand01 and hand02 should be distinct. if this is considered as repetitive code, how would I address this? providing that each hand is a seperate entity

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• MAA a Database Machine-nel, maximális rendelkezésre állás

  - by Fekete Zoltán

  Néhány napja jelent meg egy, a maximális rendelkezésre állást boncolgató Oracle fehérpapír :): Oracle Data Guard: Disaster Recovery for Sun Oracle Database Machine. Ez a dokumentum az Exadata környezetben az Oracle Data Guard használatát elemzi. Az utolsó oldalakon néhány rendkívül hasznos linket is találunk. Mire is használható a Data Guard? - katasztrófa helyzet kezelése - adatbázis gördülo upgrade - egy megoldás az Exadata környezetre migrálásra - a standby adatbázis kihasználása A Sun Oracle Database Machine háromféle konfigurációban kapható: Full Rack, Half Rack és Quarter Rack, azaz teljes, fél és negyed szekrény kiépítésben. Felfelé upgrade-elheto és akár sok Full Rack összekapcsolva is egyetlen gépként tud muködni. A határ tehát a csillagos ég! :) Hiszen a nap a legfontosabb csillagunk. A Database Machine már önmagában is magas rendelkezésreállást biztosít, hiszen minden - a muködés szempontjából fontos - minden komponense legalább duplikált! Természetesen ez az adatokra is vonatkozik. A Database Machine ideális gyors környezet mind OLTP, mind DW futtatására, mind adatbázis konszolidációra. A tranzakciós (OLTP) rendszereknél régóta fontos követelmény, hogy az elsodleges site mögött legyen egy katasztrófa site, mely át tudja venni az adatbázis-kezelés feladatát, ha árvíz, tuz, vagy más szomorú katasztrófa történne az elsodleges site-on. Manapság már az adattárházak (DW) üzemeltetésében is fontos szerepet kap az MAA architektúra, azaz a Maximum Availability Architecture. Innen letöltheto a pdf: Oracle Data Guard: Disaster Recovery for Sun Oracle Database Machine.

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• Is it normal needing time to understand code i wrote recently

  - by user1478167

  By recently i mean some weeks ago. I am trying to continue a project i left 2 weeks ago and i need time to understand some functions i wrote(not copied from somewhere) and it takes me time. Normally i don't need to because my functions,methods etc are black boxes but when i need to change something it's really hard. Does this mean i write bad code? I am still in school and i am the only who writes/uses the code so i don't have feedback, but i am afraid that if it is difficult for me to understand it, it would be 10 times more difficult for someone else. What should i do? I write a lot of comments but most of the time are useless when reviewing. Do you have any suggestions?

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• Adding complexity to remove duplicate code

  - by Phil

  I have several classes that all inherit from a generic base class. The base class contains a collection of several objects of type T. Each child class needs to be able to calculate interpolated values from the collection of objects, but since the child classes use different types, the calculation varies a tiny bit from class to class. So far I have copy/pasted my code from class to class and made minor modifications to each. But now I am trying to remove the duplicated code and replace it with one generic interpolation method in my base class. However that is proving to be very difficult, and all the solutions I have thought of seem way too complex. I am starting to think the DRY principle does not apply as much in this kind of situation, but that sounds like blasphemy. How much complexity is too much when trying to remove code duplication? EDIT: The best solution I can come up with goes something like this: Base Class: protected T GetInterpolated(int frame) { var index = SortedFrames.BinarySearch(frame); if (index >= 0) return Data[index]; index = ~index; if (index == 0) return Data[index]; if (index >= Data.Count) return Data[Data.Count - 1]; return GetInterpolatedItem(frame, Data[index - 1], Data[index]); } protected abstract T GetInterpolatedItem(int frame, T lower, T upper); Child class A: public IGpsCoordinate GetInterpolatedCoord(int frame) { ReadData(); return GetInterpolated(frame); } protected override IGpsCoordinate GetInterpolatedItem(int frame, IGpsCoordinate lower, IGpsCoordinate upper) { double ratio = GetInterpolationRatio(frame, lower.Frame, upper.Frame); var x = GetInterpolatedValue(lower.X, upper.X, ratio); var y = GetInterpolatedValue(lower.Y, upper.Y, ratio); var z = GetInterpolatedValue(lower.Z, upper.Z, ratio); return new GpsCoordinate(frame, x, y, z); } Child class B: public double GetMph(int frame) { ReadData(); return GetInterpolated(frame).MilesPerHour; } protected override ISpeed GetInterpolatedItem(int frame, ISpeed lower, ISpeed upper) { var ratio = GetInterpolationRatio(frame, lower.Frame, upper.Frame); var mph = GetInterpolatedValue(lower.MilesPerHour, upper.MilesPerHour, ratio); return new Speed(frame, mph); }

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• Machine Dependent versus Machine Independent languages

  - by Maxood

  Why might you want to write a program in a machine independent language instead of a machine- dependent language? Why might a machine-dependent language be more appropriate for writing certain types of programs?

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• Visual Studio code metrics misreporting lines of code

  - by Ian Newson

  The code metrics analyser in Visual Studio, as well as the code metrics power tool, report the number of lines of code in the TestMethod method of the following code as 8. At the most, I would expect it to report lines of code as 3. [TestClass] public class UnitTest1 { private void Test(out string str) { str = null; } [TestMethod] public void TestMethod() { var mock = new Mock<UnitTest1>(); string str; mock.Verify(m => m.Test(out str)); } } Can anyone explain why this is the case? Further info After a little more digging I've found that removing the out parameter from the Test method and updating the test code causes LOC to be reported as 2, which I believe is correct. The addition of out causes the jump, so it's not because of braces or attributes. Decompiling the DLL with dotPeek reveals a fair amount of additional code generated because of the out parameter which could be considered 8 LOC, but removing the parameter and decompiling also reveals generated code, which could be considered 5 LOC, so it's not simply a matter of VS counting compiler generated code (which I don't believe it should do anyway).

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• Colorize code inside <code></code>

  - by cvack

  I'm looking for a open source PHP script to colorize the code inside <code></code> or [code][/code] tags. Thanks

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• Remove unwanted lines,dead code from source code?

  - by Passionate programmer

  How to make source code free of the following Remove dead codes that are more than few lines between /* c++ codes */ Change more than one line breaks to one Remove modified user name and date /*-------- MODIFICATION DONE by xyz on ------------*/ I have used a code formatter tool to get a nice formatted code but stuck with code with above items.Is there any way to make sure codes like above doesn't get in to svn and automatically formatted code gets into the source.

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• Why is Clean Code suggesting avoiding protected variables?

  - by Matsemann

  Clean Code suggests avoiding protected variables in the "Vertical Distance" section of the "Formatting" chapter: Concepts that are closely related should be kept vertically close to each other. Clearly this rule doesn't work for concepts that belong in separate files. But then closely related concepts should not be separated into different files unless you have a very good reason. Indeed, this is one of the reasons that protected variables should be avoided. What is the reasoning?

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• How to know whether to create a general system or to hack a solution

  - by Andy K

  I'm new to coding , learning it since last year actually. One of my worst habits is the following: Often I'm trying to create a solution that is too big , too complex and doesn't achieve what needs to be achieved, when a hacky kludge can make the fit. One last example was the following (see paste bin link below) http://pastebin.com/WzR3zsLn After explaining my issue, one nice person at stackoverflow came with this solution instead http://stackoverflow.com/questions/25304170/update-a-field-by-removing-quarter-or-removing-month When should I keep my code simple and when should I create a 'big', general solution? I feel stupid sometimes for building something so big, so awkward, just to solve a simple problem. It did not occur to me that there would be an easier solution. Any tips are welcomed. Best

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• Are too many assertions code smell?

  - by Florents

  I've really fallen in love with unit testing and TDD - I am test infected. However, unit testing is used for public methods. Sometimes though I do have to test some assumptions-assertions in private methods too, because some of them are "dangerous" and refactoring can't help further. (I know, testing frameworks allo testing private methods). So, It became a habit of mine that (almost always) the first and the last line of a private method are both assertions. I guess this couldn't be bad (right ??). However, I've noticed that I also tend to use assertions in public methods too (as in the private) just "to be sure". Could this be "testing duplication" since the public method assumpotions are tested from the unit testng framework? Could someone think of too many assertions as a code smell?

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• SQL code editor with syntax highlighing, auto-formatting and code folding

  - by Victor Stanciu

  Hello, Is there any SQL editor that supports syntax highlighting, automatic code formatting and code folding? I found this, but it's an Eclipse plugin (I'm a NetBeans user), and cannot automatically format code, which is the most important feature I'm after. Autocompletion is not important, nor is the possibility of running the code (like the SQL editor in NetBeans). Edit: I'm sorry for not specifying, I'm looking for Linux or even web-based software.

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• Make Your Own Paper-Craft Enigma Machine [DIY Project]

  - by Asian Angel

  If you love tinkering around with ciphers and want a fun DIY project for the upcoming weekend, then we have just the thing for you. Using common household items you can construct your own personal Enigma machine that will be completely compatible with all the settings of a real Enigma machine (models I, M1, M2 and M3). Visit the second link below for the step-by-step instructions and enjoy putting together this awesome DIY project! PDF Templates for the Enigma Machine Note: This is a direct link for the PDF file itself and the templates are sized for printing on 2 A4 sheets of paper. Enigma/Paper Enigma Instruction Homepage [via BoingBoing] HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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• Resources for Virtual Machine programming

  - by good_computer

  I am a beginner (a little more than that) programmer of C. I am really interested in the field of Virtual Machines. When I read about the Python VM, the PyPy project, the advancements in JVM technology, Google V8, the Erlang VM, I really get excited about these amazing pieces of technology, and really want to get my hands dirty building them or contributing to one of these projects. I need to know.. what are the things (language, concepts, algorithms, math, etc?) I need to know/learn to be able to build a virtual machine any books or other resources that will be helpful career prospects for a virtual machine engineer (but this is least important for me for now) (one more side question: somewhere I'd read something like JVM is on the cutting edge of virtual machine technology -- that it is the most advanced VM so far -- is that true?) Please give me a LONG answer detailing all that you know.

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• Resources on learning to program in machine code?

  - by AceofSpades

  I'm a student, fresh into programming and loving it, from Java to C++ and down to C. I moved backwards to the barebones and thought to go further down to Assembly. But, to my surprise, a lot of people said it's not as fast as C and there is no use. They suggested learning either how to program a kernel or writing a C compiler. My dream is to learn to program in binary (machine code) or maybe program bare metal (program micro-controller physically) or write bios or boot loaders or something of that nature. The only possible thing I heard after so much research is that a hex editor is the closest thing to machine language I could find in this age and era. Are there other things I'm unaware of? Are there any resources to learn to program in machine code? Preferably on a 8-bit micro-controller/microprocessor. This question is similar to mine, but I'm interested in practical learning first and then understanding the theory.

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• Code coverage (c++ code execution path)

  - by Poni

  Let's say I have this code: int function(bool b) { // execution path 1 int ret = 0; if(b) { // execution path 2 ret = 55; } else { // execution path 3 ret = 120; } return ret; } I need some sort of a mechanism to make sure that the code has gone in any possible path, i.e execution paths 1, 2 & 3 in the code above. I thought about having a global function, vector and a macro. This macro would simply call that function, passing as parameters the source file name and the line of code, and that function would mark that as "checked", by inserting to the vector the info that the macro passed. The problem is that I will not see anything about paths that did not "check". Any idea how do I do this? How to "register" a line of code at compile-time, so in run-time I can see that it didn't "check" yet? I hope I'm clear.

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• Constructs for wrapping a hardware state machine

  - by Henry Gomersall

  I am using a piece of hardware with a well defined C API. The hardware is stateful, with the relevant API calls needing to be in the correct order for the hardware to work properly. The API calls themselves will always return, passing back a flag that advises whether the call was successful, or if not, why not. The hardware will not be left in some ill defined state. In effect, the API calls advise indirectly of the current state of the hardware if the state is not correct to perform a given operation. It seems to be a pretty common hardware API style. My question is this: Is there a well established design pattern for wrapping such a hardware state machine in a high level language, such that consistency is maintained? My development is in Python. I ideally wish the hardware state machine to be abstracted to a much simpler state machine and wrapped in an object that represents the hardware. I'm not sure what should happen if an attempt is made to create multiple objects representing the same piece of hardware. I apologies for the slight vagueness, I'm not very knowledgeable in this area and so am fishing for assistance of the description as well!

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• Announcing RSS feeds of Microsoft All-In-One Code Framework code samples

  - by Jialiang

  Today, we are not only announcing Sample Browser v2 CTP, but we are also excited to announce the availability of RSS feeds of All-In-One Code Framework code samples. By using these feeds, you can easily track and download the new code samples. English RSS feeds All code samples: http://support.microsoft.com/rss/en/rss.xml ASP.NET code samples: http://support.microsoft.com/rss/en/ASPNET.xml Silverlight code samples: http://support.microsoft.com/rss/en/Silverlight.xml Azure code samples: http://support.microsoft.com/rss/en/Azure.xml COM code samples: http://support.microsoft.com/rss/en/COM.xml Data Platform code samples: http://support.microsoft.com/rss/en/Data%20Platform.xml Library code samples: http://support.microsoft.com/rss/en/Library.xml Office dev code samples: http://support.microsoft.com/rss/en/Office.xml VSX code samples: http://support.microsoft.com/rss/en/VSX.xml Windows 7 code samples: http://support.microsoft.com/rss/en/Windows%207.xml Windows Forms code samples: http://support.microsoft.com/rss/en/Windows%20Forms.xml Windows General code samples: http://support.microsoft.com/rss/en/Windows%20General.xml Windows Service code samples: http://support.microsoft.com/rss/en/Windows%20Service.xml Windows Shell code samples: http://support.microsoft.com/rss/en/Windows%20Shell.xml Windows UI code samples: http://support.microsoft.com/rss/en/Windows%20UI.xml WPF code samples: http://support.microsoft.com/rss/en/WPF.xml ??RSS?? ??????:http://support.microsoft.com/rss/zh-cn/codeplex/rss.xml ASP.NET????:http://support.microsoft.com/rss/zh-cn/codeplex/ASPNET.xml Silverlight????:http://support.microsoft.com/rss/zh-cn/codeplex/Silverlight.xml Azure ????: http://support.microsoft.com/rss/zh-cn/codeplex/Azure.xml COM ????: http://support.microsoft.com/rss/zh-cn/codeplex/COM.xml Data Platform ????: http://support.microsoft.com/rss/zh-cn/codeplex/Data%20Platform.xml Library ????: http://support.microsoft.com/rss/zh-cn/codeplex/Library.xml Office dev ????: http://support.microsoft.com/rss/zh-cn/codeplex/Office.xml VSX ????: http://support.microsoft.com/rss/zh-cn/codeplex/VSX.xml Windows 7 ????: http://support.microsoft.com/rss/zh-cn/codeplex/Windows%207.xml Windows Forms ????: http://support.microsoft.com/rss/zh-cn/codeplex/Windows%20Forms.xml Windows General ????: http://support.microsoft.com/rss/zh-cn/codeplex/Windows%20General.xml Windows Service ????: http://support.microsoft.com/rss/zh-cn/codeplex/Windows%20Service.xml Windows Shell ????: http://support.microsoft.com/rss/zh-cn/codeplex/Windows%20Shell.xml Windows UI ????: http://support.microsoft.com/rss/zh-cn/codeplex/Windows%20UI.xml WPF ????: http://support.microsoft.com/rss/zh-cn/codeplex/WPF.xml

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