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Generate list of all possible permutations of a string
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70
There are several ways to do this. Common methods use recursion, memoization, or dynamic program...
Python Pandas: Get index of rows which column matches certain value
...[i] returns the ith row of df. i does not refer to the index label, i is a 0-based index.
In contrast, the attribute index returns actual index labels, not numeric row-indices:
df.index[df['BoolCol'] == True].tolist()
or equivalently,
df.index[df['BoolCol']].tolist()
You can see the differenc...
How do I exclude all instances of a transitive dependency when using Gradle?
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140
Ah, the following works and does what I want:
configurations {
runtime.exclude group: "org.sl...
How to write iOS app purely in C
...c_msgSend(self->window, sel_getUid("initWithFrame:"), (struct CGRect) { 0, 0, 320, 480 });
// here, we are creating our view controller, and our view. note the use of objc_getClass, because we cannot reference UIViewController directly in C.
id viewController = objc_msgSend(objc_msgSend(...
Show a PDF files in users browser via PHP/Perl
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answered Jan 13 '11 at 12:04
StephenStephen
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Extracting substrings in Go
... Denys SéguretDenys Séguret
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11
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Is it possible to disable floating headers in UITableView with UITableViewStylePlain?
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edited Dec 8 '16 at 21:05
shim
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answered Jul 2...
Turn off iPhone/Safari input element rounding
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670
On iOS 5 and later:
input {
border-radius: 0;
}
input[type="search"] {
-webkit-appearanc...
Replace one character with another in Bash
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405
Use inline shell string replacement. Example:
foo=" "
# replace first blank only
bar=${foo/ ...
Show a number to two decimal places
...):
return number_format((float)$number, 2, '.', '');
Example:
$foo = "105";
echo number_format((float)$foo, 2, '.', ''); // Outputs -> 105.00
This function returns a string.
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