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What's the difference between using INDEX vs KEY in MySQL?
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There's no difference. They are synonyms.
From the CREATE TABLE manual entry:
KEY is normal...
How to tell Xcode where my info.plist and .pch files are
... The particular setting is "Prefix Header" under (in my case) Apple LLVM 6.0 - Language.
– lewiguez
Apr 1 '15 at 21:01
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Align elements side by side
...ired)
– intrepidis
Apr 16 '13 at 16:06
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How to vertically align an image inside a div
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The only (and the best cross-browser) way as I know is to use an inline-block helper with height: 100% and vertical-align: middle on b...
python: how to identify if a variable is an array or a scalar
...e argument NBins . I want to make a call to this function with a scalar 50 or an array [0, 10, 20, 30] . How can I identify within the function, what the length of NBins is? or said differently, if it is a scalar or a vector?
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Can I change the root EBS device of my amazon EC2 instance?
...ight-Bit Guru
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How do I reference an existing branch from an issue in GitHub?
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edited Jun 20 at 9:12
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answered Nov 4 '11 at 11:23
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Remove duplicate lines without sorting [duplicate]
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The UNIX Bash Scripting blog suggests:
awk '!x[$0]++'
This command is telling awk which lines to print. The variable $0 holds the entire contents of a line and square brackets are array access. So, for each line of the file, the node of the array x is incremented and the...
Rails 3 check if attribute changed
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Peter BrownPeter Brown
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How to create a new (and empty!) “root” branch?
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Use the --orphan when creating the branch:
git checkout --orphan YourBranchName
This will cre...