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Programmatically create a UIView with color gradient
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Objective-C:
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
CAGradientLayer *gradient = [CAGradientLayer layer];
gradient.frame = view.bounds;
gradient.colors = @[(id)[UIColor whiteColor].CGColor, (id)[UIColor blackColor].CGColor];
[v...
Save and load MemoryStream to/from a file
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In the first code block, instead of manually copying memory stream to array, you can use built-in ms.ToArray() function.
– Gman
Mar 25 '13 at 12:36
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How to split a comma-separated string?
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List<String> elephantList = Arrays.asList(str.split(","));
Basically the .split() method will split the string according to (in this case) delimiter you are passing and will return an array of strings.
However, you seem to be after a List of Strings rather than an array, so the array mu...
Learning WebGL and three.js [closed]
...n excellent job of abstracting away many of the details of WebGL, so personally, I'd suggest using Three.js for your project. But remember, Three.js is in alpha, and it is changing frequently, so you have to be prepared for that. Most people learn Three.js by studying the examples. Avoid outdated bo...
Get first day of week in PHP?
...HP version used: 3v4l.org/Z3k4E @LewisBuckley's solution is consistent for all versions: 3v4l.org/Eeh9c
– Chris Baker
Jun 25 '14 at 14:45
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Is there any way to prevent input type=“number” getting negative values?
...entered using the arrow buttons / spinner. However, the user can still manually enter in a negative number and have that field's value read as a negative number, thus bypassing the min attribute.
– ecbrodie
Jul 14 '15 at 15:49
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IllegalArgumentException or NullPointerException for a null parameter? [closed]
... one of those things that you should do whatever you prefer and both are really correct?
26 Answers
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In Java, what does NaN mean?
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some undefined result. For example,
0.0 divided by 0.0 is arithmetically undefined. Taking the square root of a
negative number is also undefined.
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Change multiple files
...ot even just a builtin. For sed -i 's/old/new' *, the expansion of * must ALL be passed as an arglist to sed, and I'm fairly sure this has to happen before the sed process can even be started. Using the for loop, the full arglist (the expansion of *) never gets passed as a command, only stored in ...
How do I get the day of week given a date?
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Calendar math generally sucks because computers don't know what PTO is. In an effort to avoid teaching them I highly recommend obfuscating functions which determine whether it is currently a holiday or weekend.
– meawoppl...