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How do I clear the std::queue efficiently?
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A common idiom for clearing standard containers is swapping with an empty version of the container:
void clear( std::queue<int> &q )
{
std::queue<int> empty;
std::swap( q, empty );
}
It is also the only way of actually clearing th...
How to scale a UIImageView proportionally?
I have a UIImageView and the objective is to scale it down proportionally by giving it either a height or width.
17 Answer...
Deleting all records in a database table
...ll.
Post.delete_all
or with a criteria
Post.delete_all "person_id = 5 AND (category = 'Something' OR category = 'Else')"
See here for more information.
The records are deleted without loading them first which makes it very fast but will break functionality like counter cache that depends on ...
Problems with contenttypes when loading a fixture in Django
... auth.permission with --natural? I just tried without the --natural option and it worked. Also the documentation here says one should use this option if DUMPING auth.permission and contenttypes.
– wlnirvana
Dec 26 '14 at 5:05
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What's the proper value for a checked attribute of an HTML checkbox?
...d="blue">
<input name=name id=id type=checkbox checked="false">
And only the following will be unchecked:
<input name=name id=id type=checkbox>
See also this similar question on disabled="disabled".
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int to hex string
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Great! I will add $"0x{id:X4}";
– Andrei Krasutski
Mar 14 at 9:34
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how to iterate through dictionary in a dictionary in django template?
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thanks for your answer. I have recipe_name one level up and didn't show that level of the dictionary. Thank you for your answer! I couldn't use values[0] instead I had to values.items
– darren
Nov 5 '11 at 8:41
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Android: How do I get string from resources using its name?
I would like to have 2 languages for the UI and separate string values for them in my resource file res\values\strings.xml :
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git push local branch with same name as remote tag
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The following command should work.
git push origin refs/heads/product-0.2:refs/heads/product-0.2
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How do I get the n-th level parent of an element in jQuery?
...parents().eq(0); // "Father".
$('#element').parents().eq(2); // "Great-grandfather".
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