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• Copying blocks (ie: copying them to instance variables) in Objective-C

  - by RyanWilcox

  I'm trying to understand blocks. I get how to use them normally, when passed directly to a method. I'm interested now in taking a block, storing it (say) in an instance variable and calling it later. The blocks programming guide makes it sound like I can do this, by using Block_copy / retain to copy the block away, but when I try to run it I crash…

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• At the end of my rope

  - by hvgotcodes

  I am a contractor to a big company. Currently, there are three developers on the project, myself included. The problem is the other 2 developers don't really get it. By "it" i mean the following: They don't understand the best practices for the technology we are using. After 6 months of me and others giving them examples there are terrible…

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• SSH error: "Corrupted MAC on input" or "Bad packet length"

  - by William Ting

  I have 3 boxes set up as shown: The DFW box can communicate to the SFO / internet just fine, and I send files AUS - DFW. However, every time I trying transferring DFW - AUS it fails over SSH (ssh client, rsync, scp, sftp, etc) with the following error: Corrupted MAC on input. Disconnecting: Packet corrupt Occasionally I'll get a different…

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• Ubuntu 12.04 transmission-daemon and zfsonlinux: bad file descriptor and corrupt pieces

  - by Ivailo Karamanolev

  I'm running a Ubuntu 12.04 with zfsonlinux and transmission-daemon. The issues: sporadic Bad File Descriptor and Piece #xxx is corrupt errors. After I recheck the torrent, everything seems fine. That happens only when downloading: once it's in seeding mode. This only happens after the torrent client has been running for some time. I installed…

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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…

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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…

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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)); …

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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…

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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…

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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…

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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…

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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. …

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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[?]…

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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'. …

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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…

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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…

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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…

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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 : <?= ?>? …

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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? …

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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…

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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…

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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…

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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…

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• Child to Parent linking - bad idea?

  - by Thraka

  I have a situation where my parent knows about it's child (duh) but I want the child to be able to reference the parent. The reason for this is that I want the child to have the ability to designate itself as most important or least important when it feels like it. When the child does…

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• SQL SERVER – Shrinking Database is Bad – Increases Fragmentation – Reduces Performance

  - by pinaldave

  Earlier, I had written two articles related to Shrinking Database. I wrote about why Shrinking Database is not good. SQL SERVER – SHRINKDATABASE For Every Database in the SQL Server SQL SERVER – What the Business Says Is Not What the Business Wants I received many comments on…

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