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How can I count the occurrences of a list item?
...1, 4, 1].count(1)
3
Don't use this if you want to count multiple items. Calling count in a loop requires a separate pass over the list for every count call, which can be catastrophic for performance. If you want to count all items, or even just multiple items, use Counter, as explained in the othe...
How to check if mysql database exists
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* OK, apparently PHPMyAdmin just displays all database names in lower case, and your query works using both anyway
– Hubro
Jun 15 '12 at 13:21
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How do I convert a PDF document to a preview image in PHP? [closed]
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You need ImageMagick and GhostScript
<?php
$im = new imagick('file.pdf[0]');
$im->setImageFormat('jpg');
header('Content-Type: image/jpeg');
echo $im;
?>
The [0] means page 1.
sha...
In C++, is it still bad practice to return a vector from a function?
...sn't a compiler on the market that provides copy-elison as varied as the examples Abrahams uses in the article.
– Hippicoder
Jun 28 '10 at 20:35
13
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Play a Sound with Python [duplicate]
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Avoid oss, it's old. I don't think I even have it installed anymore.
– Jeffrey Aylesworth
Jan 30 '10 at 19:47
8
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Mail multipart/alternative vs multipart/mixed
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Could someone comment on how to do this in PHP?
– RightHandedMonkey
Feb 27 '15 at 20:11
1
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Switching to landscape mode in Android Emulator
...inux.
For Mac users, you only need to use the fn key if the setting "Use all F1, F2 etc. keys as function keys" (under System Preferences -> Keyboard) is checked.
left-ctrl+F11on Windows 7
It works fine in Windows 7 for android emulator to change the landscape orientation to portrait and vic...
How to import classes defined in __init__.py
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wow, the word "helper" really starts to loose meaning in that example. However, you've shown me what I was looking for.
– scottm
Feb 24 '09 at 21:06
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How to return a value from __init__ in Python?
I have a class with an __init__ function.
10 Answers
10
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Drop all tables whose names begin with a certain string
How can I drop all tables whose names begin with a given string?
14 Answers
14
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