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MySQL Cannot drop index needed in a foreign key constraint
...rent index but keep getting the error MySQL Cannot drop index needed in a foreign key constraint
8 Answers
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Best general SVN Ignore Pattern?
...I use the following SVN ignore pattern with TortoiseSVN and Subversion CLI for native C++, C#/VB.NET, and PERL projects on both Windows and Linux platforms. It works well for me!
Formatted for copy and paste:
*.o *.lo *.la #*# .*.rej *.rej .*~ *~ .#* .DS_Store thumbs.db Thumbs.db *.bak *.class...
Setting custom UITableViewCells height
..., I cannot set a constant height to the cell in the UITableView 's heightForCellAtIndex method. The cell's height depends on the label's height which can be determined using the NSString 's sizeWithFont method. I tried using it, but it looks like I'm going wrong somewhere. How can it be fixed?...
autolayout - make height of view relative to half superview height
... at the top of the screen, and take up half of the screen-height. Simple before autolayout - just tack it in place and tell it to expand vertically when the superview resizes.
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How to see which flags -march=native will activate?
...his is suboptimal. The output of --help=target doesn't display CPU cache information, of which the methods both elias and 42n4 below have listed. Specifically, on gcc 4.9.2 on a Phenom, the output includes these: --param l1-cache-size=64 --param l1-cache-line-size=64 --param l2-cache-size=512
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PHP abstract properties
...tract" only indicates that something was declared but not defined and therefore before using it, you need to define it or it becomes useless.
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What does 'require: false' in Gemfile mean?
...ld then save memory in the main app processes and startup time etc. App performance, however, should not be affected even if you require these additional gems in every process.
– Michael van Rooijen
Aug 14 '12 at 23:52
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How to document Python code with doxygen [closed]
...e Python documentation string syntax:
"""@package docstring
Documentation for this module.
More details.
"""
def func():
"""Documentation for a function.
More details.
"""
pass
In which case the comments will be extracted by doxygen, but you won't be able to use any of the spec...
How to find indices of all occurrences of one string in another in JavaScript?
...o where you started. As pointed out by Wrikken in the comments, to do this for the general case with regular expressions you would need to escape special regex characters, at which point I think the regex solution becomes more of a headache than it's worth.
function getIndicesOf(searchStr, str,...
Concurrent vs serial queues in GCD
...concurrent: the code runs on a background thread but the main thread waits for it to finish, blocking any updates to the UI. The block can't assume that it's the only block running on that queue (I could have added another block using async a few seconds previously)
sync - serial: the code runs on a...