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When to use enumerateObjectsUsingBlock vs. for
...Ultimately, use whichever pattern you want to use and comes more naturally in the context.
While for(... in ...) is quite convenient and syntactically brief, enumerateObjectsUsingBlock: has a number of features that may or may not prove interesting:
enumerateObjectsUsingBlock: will be as fast or ...
How do I pass data between Activities in Android application?
I have a scenario where, after logging in through a login page, there will be a sign-out button on each activity .
51 An...
Which UUID version to use?
Which version of the UUID should you use? I saw a lot of threads explaining what each version entails, but I am having trouble figuring out what's best for what applications.
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Detect when browser receives file download
...nerated file. It takes a long time to generate, so I'd like to show a "waiting" indicator. The problem is, I can't figure out how to detect when the browser has received the file, so I can hide the indicator.
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Add margin between a RadioButton and its label in Android?
...dd a little bit of space between a RadioButton and the label while still using Android's built-in components? By default the text looks a little scrunched.
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jQuery Validate Required Select
I am trying to validate html select element using jQuery Validate plugin. I set "required" rule to true but it always passes validation because zero index is chosed by default. Is there any way to define empty value that is used by required rule?
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How does one remove an image in Docker?
I'm running Docker under Vagrant under OS X 10.8.4 (Mountain Lion), and whenever I try to delete a saved image, I get an error:
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What is the purpose of fork()?
In many programs and man pages of Linux, I have seen code using fork() . Why do we need to use fork() and what is its purpose?
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JavaScript function in href vs. onclick
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Putting the onclick within the href would offend those who believe strongly in separation of content from behavior/action. The argument is that your html content should remain focused solely on content, not on presentation or beh...
What is the main purpose of setTag() getTag() methods of View?
What is the main purpose of such methods as setTag() and getTag() of View type objects?
7 Answers
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