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Is returning by rvalue reference more efficient?
... I had always assumed the dangling reference problem went away automagically when the return type was an r-value reference. Glad I got that straighted out before it bit me. Stack smashing bugs suck.
– deft_code
Jul 15 '09 at 3:03
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UISegmentedControl below UINavigationbar in iOS 7
...WillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self _moveHairline:YES];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self _moveHairline:NO];
}
- (void)_moveHairline:(BOOL)appearing
{
// move the hairline below the segmentbar
...
How to check certificate name and alias in keystore files?
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In order to get all the details I had to add the -v option to romaintaz answer:
keytool -v -list -keystore <FileName>.keystore
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Semicolons superfluous at the end of a line in shell scripts?
...e superfluous, since the newline is also a command separator. case specifically needs double semicolons at the end of the last command in each pattern block; see help case for details.
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impro...
How to automatically generate getters and setters in Android Studio
Is there a shortcut in Android Studio for automatically generating the getters and setters in a given class?
15 Answers
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Using C# to check if string contains a string in string array
...one of substrings from stringArray. If you want to ensure that it contains all the substrings, change Any to All:
if(stringArray.All(stringToCheck.Contains))
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Find all files in a directory with extension .txt in Python
How can I find all the files in a directory having the extension .txt in python?
26 Answers
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PostgreSQL: insert from another table
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Just supply literal values in the SELECT:
INSERT INTO TABLE1 (id, col_1, col_2, col_3)
SELECT id, 'data1', 'data2', 'data3'
FROM TABLE2
WHERE col_a = 'something';
A select list can contain any value expression:
But the expressions in the select list do not have to reference any columns i...
Moving average or running mean
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UPD: more efficient solutions have been proposed by Alleo and jasaarim.
You can use np.convolve for that:
np.convolve(x, np.ones((N,))/N, mode='valid')
Explanation
The running mean is a case of the mathematical operation of convolution. For the running mean, you slide...
How to load db:seed data into test database automatically?
...ore every test or just once at the beginning. You could put it in a setup call or in a test_helper.rb file.
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