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Get the first key name of a javascript object [duplicate]
... I'd like to point out that for (key in dict) is likely to execute significantly faster, O(1) rather than O(n). It's not silly at all.
– Steven Lu
Jan 8 '13 at 6:49
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Setting the filter to an OpenFileDialog to allow the typical image formats?
..., how can I allow it to accept all typical image formats? PNG, JPEG, JPG, GIF?
11 Answers
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PostgreSQL: How to make “case-insensitive” query
...mns--in this case "name"--will cause any indexes to no longer be seekable. If this is a large or frequently queried table, that could cause trouble. Case-insensitive collation, citext, or a function-based index will improve performance.
– Jordan
Aug 10 '11 at 4...
How to customize the back button on ActionBar
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The "up" affordance indicator is provided by a drawable specified in the homeAsUpIndicator attribute of the theme. To override it with your own custom version it would be something like this:
<style name="Theme.MyFancyTheme" parent="android:Theme.Holo">
<item name="andro...
lose vim colorscheme in tmux mode
...have set in vim does not show up. Only the color scheme I've set in iterm. If I run vim from shell the colorscheme appears correct - its only when I'm in tmux mode.
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HTTP test server accepting GET/POST requests
...quests for basic information via HTTP GET and also allows me to POST (even if it's really not doing anything). This is entirely for test purposes.
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In Ruby, how do I skip a loop in a .each loop, similar to 'continue' [duplicate]
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Use next:
(1..10).each do |a|
next if a.even?
puts a
end
prints:
1
3
5
7
9
For additional coolness check out also redo and retry.
Works also for friends like times, upto, downto, each_with_index, select, map and other iterators (and more generally b...
Call to undefined function curl_init().? [duplicate]
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If you're on Windows:
Go to your php.ini file and remove the ; mark from the beginning of the following line:
;extension=php_curl.dll
After you have saved the file you must restart your HTTP server software (e.g. Apache) ...
Should I use “hasClass” before “addClass”? [duplicate]
...ss the following script which checks whether an element has class a , and if not, adds it:
3 Answers
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What does “static” mean in C?
I've seen the word static used in different places in C code; is this like a static function/class in C# (where the implementation is shared across objects)?
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