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Magic number in boost::hash_combine
...say, this means that consecutive values will be far apart. Including the shifted versions of the old seed makes sure that, even if hash_value() has a fairly small range of values, differences will soon be spread across all the bits.
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How do I immediately execute an anonymous function in PHP?
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@BennettMcElwee let's put it this way: even if this performs somewhat slower than the define-assign-call alternative, the likelihood of this posing a significant bottleneck in your application is very low. when in doubt profile your app under real world conditions.
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android - How to set the Rating bar is non clickable and touchable in HTC mobile
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this is the best solution if you are using this in the list view.
– AlbertRosa
Jan 19 '12 at 22:04
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How to switch a user per task or set of tasks?
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become: yes
become_user: some_user
You can use become_with to specify how the privilege escalation is achieved, the default being sudo.
The directive is in effect for the scope of the block in which it is used (examples).
See Hosts and Users for some additional examples and Become (Privil...
Ng-model does not update controller value
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This only works one-way... what if you want to change the value of searchText?
– cdmckay
Jul 8 '13 at 17:04
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When should I use Write-Error vs. Throw? Terminating vs. non-terminating errors
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Write-Error should be used if you want to inform the user of a non-critical error. By default all it does is print an error message in red text on the console. It does not stop a pipeline or a loop from continuing. Throw on the other hand produces what...
How to format a number as percentage in R?
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With usage, e.g.,
x <- c(-1, 0, 0.1, 0.555555, 1, 100)
percent(x)
(If you prefer, change the format from "f" to "g".)
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How to hide command output in Bash
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Usually, output goes either to file descriptor 1 (stdout) or 2 (stderr). If you close a file descriptor, you'll have to do so for every numbered descriptor, as &> (below) is a special BASH syntax incompatible with >&-:
/your/first/command >&- 2>&-
Be careful to note ...
Get a CSS value with JavaScript
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If you want to change background color of a div for example, be careful to NOT USE "backgroundColor" instead of "backgroung-color" ;)
– baptx
May 20 '12 at 17:24
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Ruby Hash to array of values
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+! Nifty! I will upvote despite having a competing answer (using map), cos I like this a lot!
– Michael Durrant
Mar 5 '12 at 0:57
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