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  • What "bad practice" do you do, and why?

    - by coppro
    Well, "good practice" and "bad practice" are tossed around a lot these days - "Disable assertions in release builds", "Don't disable assertions in release builds", "Don't use goto.", we've got all sorts of guidelines above and beyond simply making your program work. So I ask of you, what coding practices do you violate all the time, and more importantly, why? Do you disagree with the establishment? Do you just not care? Why should everyone else do the same? cross links: What's your favorite abandoned rule? Rule you know you should follow but don't

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  • Does Open Source lead to bad coding?

    - by David Conde
    I have a thought that I tried asking at SO, but didnt seem like the appropriate place. I think that source sites like Google Code, GitHub, SourceForge... have played a major role in the history of programming. However, I found that there is another bad thing to these kind of sites and that is you may just "copy" code from almost anyone, not knowing if it is good(tested) source or not. This line of thought has taken me to believe that source code websites tend to lead many developers (most likely unexperienced) to copy/paste massive amounts of code, which I find just wrong. I really dont know how to focus the question well, but basic thought would be: Is this ok? Is Open Source contributing to that or I'm just seeing ghosts... Hope people get interested because I think this is an important theme.

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  • Bad FPS for smaller size (OpenGL ES with SDL)

    - by ber4444
    If you saw my other question, well, there is still a little problem: Click here to watch on youtube Basically, the frame rate is very bad on the actual device, where for some reason the animation is scaled (it looks like the left side on the video). It is quite fast on the simulator where it is not scaled (right side). For a test, I submitted this new changeset that hard-codes the smaller size (plus increases the point size for HII regions to make the dust clouds more visible), and as you see in the video, now it is slow even in the simulator (left side shows the small size, right side shows the original size -- otherwise the code is the same). I'm clueless why it's soooo slow with a smaller galaxy, in fact it should be FASTER. As for general speed optimization (which is not strictly part of my question but is closely related to it, esp. if we need a workaround to speed things up), some initial ideas: reducing the number of items drawn may affect the appearance negatively but screen resolution could be reduced there are too many glBegin(GL_POINTS)/glEnd() blocks, we could draw more than just a single star at once

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  • Use a template to get alternate behaviour?

    - by Serge
    Is this a bad practice? const int sId(int const id); // true/false it doesn't matter template<bool i> const int sId(int const id) { return this->id = id; } const int MCard::sId(int const id){ MCard card = *this; this->id = id; this->onChange.fire(EventArgs<MCard&, MCard&>(*this, card)); return this->id; } myCard.sId(9); myCard.sId<true>(8); As you can see, my goal is to be able to have an alternative behaviour for sId. I know I could use a second parameter to the function and use a if, but this feels more fun (imo) and might prevent branch prediction (I'm no expert in that field). So, is it a valid practice, and/or is there a better approach?

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  • T-SQL User-Defined Functions: the good, the bad, and the ugly (part 1)

    - by Hugo Kornelis
    So you thought that encapsulating code in user-defined functions for easy reuse is a good idea? Think again! SQL Server supports three types of user-defined functions. Only one of them qualifies as good. The other two – well, the title says it all, doesn’t it? The bad: scalar functions A scalar user-defined function (UDF) is very much like a stored procedure, except that it always returns a single value of a predefined data type – and because of that property, it isn’t invoked with an EXECUTE statement,...(read more)

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  • When is a 'core' library a bad idea?

    - by Alex Angas
    When developing software, I often have a centralised 'core' library containing handy code that can be shared and referenced by different projects. Examples: a set of functions to manipulate strings commonly used regular expressions common deployment code However some of my colleagues seem to be turning away from this approach. They have concerns such as the maintenance overhead of retesting code used by many projects once a bug is fixed. Now I'm reconsidering when I should be doing this. What are the issues that make using a 'core' library a bad idea?

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  • T-SQL User-Defined Functions: the good, the bad, and the ugly (part 1)

    - by Hugo Kornelis
    So you thought that encapsulating code in user-defined functions for easy reuse is a good idea? Think again! SQL Server supports three types of user-defined functions. Only one of them qualifies as good. The other two – well, the title says it all, doesn’t it? The bad: scalar functions A scalar user-defined function (UDF) is very much like a stored procedure, except that it always returns a single value of a predefined data type – and because of that property, it isn’t invoked with an EXECUTE statement,...(read more)

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  • Recover files from NTFS drive with bad sectors

    - by Martin
    A few nights ago I have created a backup of my data on an external 500 GB NTFS USB hard drive. I have then formatted my computer, reinstalled Ubuntu and started transferring back the data from the external HDD. Unfortunately some files have became corrupted and Ubuntu is unable to copy them over. The same issue happens if I login using Windows 7. Disk Utility detects with SMART that there are "a few bad sectors". Some of files are perfectly intact, but other files cannot be accessed (nor read, copied...) although they are displayed within nautilus and show the correct file size. Is there anything I can do to recover this data? I have thought of using TestDisk but this utility seems more useful for repairing lost partitions or deleted files. I have also thought of using ddrescue so I could at least have a low level copy of the disk but I am not sure what use to make of it in order to recover the data!!!

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  • The actual difference between styesheet in the header and a seperate file

    - by David Knight
    Am wondering if someone can give me an opinion on this. I have always been taught to have all of the CSS in a separate file that is referenced from the head of the page. Reading this article http://www.lukew.com/ff/entry.asp?1792 the author is talking about making the Guardian website responsive. One of the things he notes they did to make the site faster and more resilient is to add the CSS inline into the header, thus reducing HTTP requests. Now this got me thinking about the right/best/fastest way of using the CSS If you have one main CSS file, its going to be called and read by the site on every page, no mater how big it is. So with that in mind, Im actually starting to think its better to just inline the whole style sheet and remove one HTTP roundtrip. I know for the purposes of neatness and being able to edit the file a seperate file is better. But which would you recommend and which do you think is faster? Thanks!

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  • HTML5 valid Google+ Button - Bad value publisher for attribute rel

    - by mrtsherman
    I recently migrated my website from xhtml transitional to html5. Specifically so that I could make use of valid block level anchor tags. <a><div /></a>. When running validation I encountered the following error: Bad value publisher for attribute rel on element link: Keyword publisher is not registered. But according to this page, that is exactly what I am supposed to do. https://developers.google.com/+/plugins/badge/#connect My code: <link href="https://plus.google.com/xxxxxxxxxxxxxxxx" rel="publisher" /> <a href="https://plus.google.com/xxxxxxxxxxxxxxx?prsrc=3" style="text-decoration:none;"> <img src="https://ssl.gstatic.com/images/icons/gplus-16.png" alt="" style="border:0;width:16px;height:16px;"/> </a> I can't figure out how to implement this in an html5 compliant way. Can anyone help?

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  • REST - Tradeoffs between content negotiation via Accept header versus extensions

    - by Brandon Linton
    I'm working through designing a RESTful API. We know we want to return JSON and XML for any given resource. I had been thinking we would do something like this: GET /api/something?param1=value1 Accept: application/xml (or application/json) However, someone tossed out using extensions for this, like so: GET /api/something.xml?parm1=value1 (or /api/something.json?param1=value1) What are the tradeoffs with these approaches? Is it best to rely on the accept header when an extension isn't specified, but honor extensions when specified? Is there a drawback to that approach?

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  • Ubuntu Server SHH backspace Bad Character

    - by Edwin Lunando
    so while while I'm using SSH to connect my server the backspace shows me bad character. The backspace is the one with question mark. The backspace itself works normally, but in the screen, it wasn't very neat to look stacking question mark. This is the example. The square-bracketed question mark means backspace. cat[?] output: ca: not found cat[?][?] output: c:not found cat[?][?][?] output: nothing, because it simple delete the 3 character. Please help. Thank you.

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  • How do I avoid "Developer's Bad Optimization Intuition"?

    - by Mona
    I saw on a article that put forth this statement: Developers love to optimize code and with good reason. It is so satisfying and fun. But knowing when to optimize is far more important. Unfortunately, developers generally have horrible intuition about where the performance problems in an application will actually be. How can a developer avoid this bad intuition? Are there good tools to find which parts of your code really need optimization (for Java)? Do you know of some articles, tips, or good reads on this subject?

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  • Is nesting types considered bad practice?

    - by Rob Z
    As noted by the title, is nesting types (e.g. enumerated types or structures in a class) considered bad practice or not? When you run Code Analysis in Visual Studio it returns the following message which implies it is: Warning 34 CA1034 : Microsoft.Design : Do not nest type 'ClassName.StructueName'. Alternatively, change its accessibility so that it is not externally visible. However, when I follow the recommendation of the Code Analysis I find that there tend to be a lot of structures and enumerated types floating around in the application that might only apply to a single class or would only be used with that class. As such, would it be appropriate to nest the type sin that case, or is there a better way of doing it?

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  • "Bad apple" algorithm, or process crashes shared sandbox

    - by Roger Lipscombe
    I'm looking for an algorithm to handle the following problem, which I'm (for now) calling the "bad apple" algorithm. The problem I've got a N processes running in M sandboxes, where N M. It's impractical to give each process its own sandbox. At least one of those processes is badly-behaved, and is bringing down the entire sandbox, thus killing all of the other processes. If it was a single badly-behaved process, then I could use a simple bisection to put half of the processes in one sandbox, and half in another sandbox, until I found the miscreant. This could probably be extended by partitioning the set into more than two pieces until the badly-behaved process was found. For example, partitioning into 8 sets allows me to eliminate 7/8 of the search space at each step, and so on. The question If more than one process is badly-behaved -- including the possibility that they're all badly-behaved -- does this naive algorithm "work"? Is it guaranteed to work within some sensible bounds?

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  • Is it bad practice to use <?= tag in PHP

    - by marco-fiset
    I've come across this PHP tag <?= ?> recently and I am reluctant to use it, but it itches so hard that I wanted to have your take on it. I know it is bad practice to use short tags <? ?> and that we should use full tags <?php ?> instead, but what about this one : <?= ?>? It would save some typing and it would be better for code readability, IMO. So instead of this: <input name="someVar" value="<?php echo $someVar; ?>"> I could write it like this, which is cleaner : <input name="someVar" value="<?= $someVar ?>"> Is using this operator frowned upon?

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  • Are icon fonts bad for SEO?

    - by user359650
    Instead of using <img> tags for your icons, you can use icon fonts on <span> tags (which offer some advantages such as not having to create a sprite, being able to scale icons up/down without degrading quality...). However, by using an icon font you give up the <img> alt attribute (that attribute can help you with SEO). There is a way to add text to the <span> and hide it, but I wonder whether this is recognized / penalized by Google (as it seems to go against the quality guidelines). Are icon fonts bad for SEO (i.e. by using icon fonts you give up the alt attribute) ? Would inserting text in font icon tag and hiding it with CSS (text-indent: -9999px) be recognized / penalized by Google ?

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  • can't update 12.04 getting package header error

    - by joel
    I originally posted this question, and was redirected to another thread where the question had already been asked. I then posted to that thread and had my post deleted by moderator fossfreedom, and told to post a "new" question... so wth ever.... I don't care if it's old or new I just need help here people! In a nutshell, I can't use sudo apt-get update or the GUI update tool to update my system. Anytime I try using either tool it gives me an error about packages missing headers. I can't send error reports, I have tried all the listed solutions from this post: I can't update my system properly, "no package header" error and from this post: "Problem with MergeList" error when trying to do an update and neither one work. I just want a working solution since I don't have the means of re-installing the OS entirely, and I REALLY don't want to have to go back to using Windows.

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  • How accurate is header information received?

    - by blankip
    Please see What could keep a javascript from loading properly on a page? In the header it shows that it is coming from IIS 6.0. How accurate is this information? Also this vendor (which is the worst I have worked with) made us go through a huge server switch process. Did they "upgrade" to W2003 IIS6.0? What would be the reason for a "new" server to be running this old of a version of IIS? Am I missing something?

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  • Can't upgrade 11.04: flashplugin-nonfree: Package is in very bad, inconsistent state

    - by Ondra Žižka
    I can't upgrade from 11.04. I've disabled all apt sources, but still I get: http://img715.imageshack.us/img715/6680/snmekobrazovkyg.png The only option I am capable doing is to format and reinstall whole system, which I don't prefer as I have tuned a lot of apps settings, etc. How can I fix this? Update: After restart, when trying to update all packages, I get this error: installArchives() failed: dpkg: error processing flashplugin-nonfree (--remove): Package is in very bad, inconsistent state - before trying to remove rather reinstall it. Reinstalling it results in the same error.

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  • Adobe Reader (acroread) 64 bit looks bad

    - by andreas-1724
    I installed acroread on Ubuntu 14.04 64-bit with gdebi (also tried dpkg and via repository "deb http://archive.canonical.com/ precise partner"). The result looks bad. For example the open-dialog is out of place, the folder-icons are green and the buttons are not rounded. Actually when I start acroread from the command-line, I get several messages and warnings: Gtk-Message: Failed to load module "overlay-scrollbar" Gtk-Message: Failed to load module "unity-gtk-module" Gtk-WARNING **: Unable to locate theme engine in module_path: "murrine" Gtk-Message: Failed to load module "canberra-gtk-module" I remember, that I had this problem, whenever I used a 64bit-Ubuntu (even Ubuntu 12.04), but not when I used a 32bit-Ubuntu.

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  • is OpenID really that bad?

    - by DoPPler
    I have seen this question on Quora where lots of people seem to agree that OpenID is bad, even going as far as stating that: OpenID is the worst possible "solution" I have ever seen in my entire life to a problem that most people don't really have Then I've seen articles and tweets referencing that question saying that OpenID has lost, and Facebook won. It's sad to read as I quite like the OpenID (or at least idea behind it). I literally hate getting yet another login/password for page (I'll forget it anyway) - it's a pretty serious issue for me and I know lots of people with the same problem. Thus I thought that OpenId is a great solution but I'm not sure anymore. So the question is should I still bother to implement OpenID or it's not worth it? What is the most robust and convenient (from the user perspective) way to identify and authenticate an user?

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  • How to remove package in bad state, software center freezes, no synaptic

    - by GothicMonster
    When 'Update Manager' starts running, it tells me that I need to do a 'Partial Upgrade', when I start doing the upgrade, it tells me "Remove package in bad state The package 'linux-headers-3.0.0-19' is in an inconsistent state and needs to be reinstalled, but no archive can be found for it. Do you want to remove this package now to continue?" When I click 'Yes' the program just closes. I have tried to go into the software center and reinstall the 'linux-headers-3.0.0-19' ubuntu software center just freezes. Right now I cannot run 'Synaptic', or remove any software. Please help!

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  • Jumping around to work on different features when you get stuck, is it a source of project failures?

    - by codecompleting
    On personal projects (or work), if one gets stuck on a problem, or waiting to figure out a solution to the problem, if you jump to another section of your code, don't you think it will be a good reason your application will be buggy or worse yet never get completed? Assuming you are not using git and code each feature to a specific branch, things can get out of hand since you have 3 different features you are working on, and you have unresolved issues in each. So when you get done to work, you get stressed out because you have these hanging issues and half-baked code lingering about. What's the best way to avoid this problem? (if you have it) I'm guessing using something like git and creating a branch per feature is the safest way to avoid this bad habit. Any other suggestions?

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  • Site returning 404 header to google, not sure why

    - by Damon
    A Drupal site that works fine for regular users returns a 404 not found error when I try to use the W3C validator on it; it is also not being indexed by google at all (which is the main issue but I suspect there is a connection). It is a https:// site with .htaccess rule to redirect any http:// request to the https://. I had had it running in google webmaster tools and thought it was fine, but it turns out I had not added the https domain. After adding the https domain it's also returning the header as HTTP/1.1 404 Not Found Date: Mon, 15 Oct 2012 19:37:43 GMT Server: Apache Expires: Sun, 19 Nov 1978 05:00:00 GMT Cache-Control: no-cache, must-revalidate, post-check=0, pre-check=0 Robots.txt just has User-agent: * Crawl-delay: 10 # Files Disallow: /cron.php How can I check what the issue is here?

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