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Ruby: extend self
In Ruby, I understand the basic idea of extend . However, what's happening in this segment of code? Specifically, what does extend do? Is it just a convenient way of making the instance methods into class methods? Why would you do it this way rather than specifying class methods from the beginnin...
In Scala how do I remove duplicates from a list?
Suppose I have
8 Answers
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How do I “source” something in my .vimrc file?
I've been working on expanding my vim-foo lately and I've run across a couple of plugins ( autotag.vim for example) that require them to be "sourced" in my .vimrc file. What exactly does this mean and how do I do it?
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Which characters are valid/invalid in a JSON key name?
Are there any forbidden characters in key names, for JavaScript objects or JSON strings? Or characters that need to be escaped?
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OrderBy descending in Lambda expression?
I know in normal Linq grammar, orderby xxx descending is very easy, but how do I do this in Lambda expression?
6 Answers
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MySQL - length() vs char_length()
What's the main difference between length() and char_length() ?
2 Answers
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jQuery add image inside of div tag
I have a div tag
6 Answers
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Align elements side by side
I know this is a rather simple question, but I can't figure it out for the life of me. I have two links which I've applied a background image to. Here's what it currently looks like (apologies for the shadow, just a rough sketch of a button):
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How to change cursor from pointer to finger using jQuery?
This is probably really easy, but I've never done it before. How do you change your cursor to the finger (like for clicking on links) instead of the regular pointer?
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Rails 3 check if attribute changed
Need to check if a block of attributes has changed before update in Rails 3.
5 Answers
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