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Validate that a string is a positive integer
...formerly-allowed) way that says a leading zero means octal (base 8), e.g "010" => 8. Once you've validated the number, you can safely use parseInt(str, 10) to ensure that it's parsed as decimal (base 10). parseInt would ignore garbage at the end of the string, but we've ensured there isn't any wi...
Is it unnecessary to put super() in constructor?
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answered Jan 13 '10 at 2:48
cletuscletus
561k152152 gold badges873873 silver badges927927 bronze badges
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Find a Git branch containing changes to a given file
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edited Mar 28 '17 at 1:10
BMW
30.9k99 gold badges7272 silver badges9090 bronze badges
answered Jun 6 ...
Numpy: Get random set of rows from 2D array
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>>> A = np.random.randint(5, size=(10,3))
>>> A
array([[1, 3, 0],
[3, 2, 0],
[0, 2, 1],
[1, 1, 4],
[3, 2, 2],
[0, 1, 0],
[1, 3, 1],
[0, 4, 1],
[2, 4, 2],
[3, 3, 1]])
>>> idx = np....
Does ARC support dispatch queues?
...ng answer…
If your deployment target is lower than iOS 6.0 or Mac OS X 10.8
You need to use dispatch_retain and dispatch_release on your queue. ARC does not manage them.
If your deployment target is iOS 6.0 or Mac OS X 10.8 or later
ARC will manage your queue for you. You do not need to (an...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...ReverseTable256[] =
{
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 0x14, 0x94, 0x54, 0xD4, 0x34,...
Prevent tabstop on A element (anchor link) in HTML
...oiRoberto Aloi
28k1717 gold badges6262 silver badges108108 bronze badges
22
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Rollback a Git merge
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Jul 30 '12 at 13:32
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Java - get pixel array from image
...t.println("Testing convertTo2DUsingGetRGB:");
for (int i = 0; i < 10; i++) {
long startTime = System.nanoTime();
int[][] result = convertTo2DUsingGetRGB(hugeImage);
long endTime = System.nanoTime();
System.out.println(String.format("%-2d: %s", (i + 1), to...
Get escaped URL parameter
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answered Sep 10 '09 at 8:38
JamesJames
101k2828 gold badges155155 silver badges172172 bronze badges
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