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How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method
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edited Nov 3 '16 at 20:41
Peter Mortensen
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Creating a UIImage from a UIColor to use as a background image for UIButton [duplicate]
... (UIImage *)imageFromColor:(UIColor *)color {
CGRect rect = CGRectMake(0, 0, 1, 1);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImag...
Why does 'continue' behave like 'break' in a Foreach-Object?
...on a particular iteration, thus, it simulates the continue in a loop.
1..100 | ForEach-Object {
if ($_ % 7 -ne 0 ) { return }
Write-Host "$($_) is a multiple of 7"
}
There is a gotcha to be kept in mind when refactoring. Sometimes one wants to convert a foreach statement block into a pipe...
Exit a Script On Error
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answered Dec 7 '10 at 21:13
Byron WhitlockByron Whitlock
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Counting the number of True Booleans in a Python List
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Python: Append item to list N times
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For immutable data types:
l = [0] * 100
# [0, 0, 0, 0, 0, ...]
l = ['foo'] * 100
# ['foo', 'foo', 'foo', 'foo', ...]
For values that are stored by reference and you may wish to modify later (like sub-lists, or dicts):
l = [{} for x in range(100)]
(Th...
How do I give text or an image a transparent background using CSS?
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30 Answers
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Accessing localhost:port from Android emulator
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420
You can access your host machine with the IP address "10.0.2.2".
This has been designed in thi...
arrayfun can be significantly slower than an explicit loop in matlab. Why?
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101
You can get the idea by running other versions of your code. Consider explicitly writing out th...