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How do I avoid capturing self in blocks when implementing an API?

I have a working app and I'm working on converting it to ARC in Xcode 4.2. One of the pre-check warnings involves capturing self strongly in a block leading to a retain cycle. I've made a simple code sample to illustrate the issue. I believe I understand what this means but I'm not sure the "corre...
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Using CSS how to change only the 2nd column of a table

Using css only, how can I override the css of only the 2nd column of a table. 5 Answers ...
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LIKE vs CONTAINS on SQL Server

Which one of the following queries is faster (LIKE vs CONTAINS)? 4 Answers 4 ...
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Combine --user with --prefix error with setup.py install

I was trying to install Python packages a system I recently gained access to. I was trying to take advantage of Python's relatively new per user site-packages directory , and the new option --user . (The option is currently undocumented , however it exists for Python 2.6+; you can see the help by...
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Faye vs. Socket.IO (and Juggernaut)

Socket.IO seems to be the most popular and active WebSocket emulation library. Juggernaut uses it to create a complete pub/sub system. ...
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What are major differences between C# and Java?

I just want to clarify one thing. This is not a question on which one is better, that part I leave to someone else to discuss. I don't care about it. I've been asked this question on my job interview and I thought it might be useful to learn a bit more. ...
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What are the most-used vim commands/keypresses?

I'm a Ruby programming trying to switch from Textmate to MacVim, and I'm having trouble wading through the gargantuan lists of things you can do in VIM and all of the keypresses for them. I'm tired of hearing "You can use 'I' for inserting text, or 'a' for appending text after the character, or 'A' ...
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iTextSharp - Sending in-memory pdf in an email attachment

I've asked a couple of questions here but am still having issues. I'd appreciate if you could tell me what I am doing wrong in my code. I run the code above from a ASP.Net page and get "Cannot Access a Closed Stream". ...
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When correctly use Task.Run and when just async-await

I would like to ask you on your opinion about the correct architecture when to use Task.Run . I am experiencing laggy UI in our WPF .NET 4.5 application (with Caliburn Micro framework). ...
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Does every Core Data Relationship have to have an Inverse?

Let's say I have two Entity classes: SocialApp and SocialAppType 8 Answers 8 ...