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Get a filtered list of files in a directory
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400
import glob
jpgFilenamesList = glob.glob('145592*.jpg')
See glob in python documenttion
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Convert a character digit to the corresponding integer in C
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As per other replies, this is fine:
char c = '5';
int x = c - '0';
Also, for error checking, you may wish to check isdigit(c) is true first. Note that you cannot completely portably do the same for letters, for example:
char c = 'b';
int x = c - 'a'; // x is now not necessarily 1
Th...
How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
...efaults to picking the newest JDK from /Library/Java as long as that is 7u10 or later, or uses Java 6 if your Java 7 installation is update 9 or earlier. But unravelling the logic in the shell scripts it looks to me like you can specify a particular JDK using a configuration file.
Create a text fi...
Programmatically obtain the Android API level of a device?
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107
You can obtain API level programatically by the system constant (Build.VERSION.SDK_INT). For ex...
How do I call an Angular.js filter with multiple arguments?
...a template to censor out all digits:
<p>{{ myText | regexReplace: '[0-9]':'X' }}</p>
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“x not in y” or “not x in y”
... 'ham' not in 'spam and eggs'
>>> dis.dis(notin)
2 0 LOAD_CONST 1 ('ham')
3 LOAD_CONST 2 ('spam and eggs')
6 COMPARE_OP 7 (not in)
9 POP_TOP
10 LOAD_CONST ...
The type or namespace name does not exist in the namespace 'System.Web.Mvc'
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420
Clean your solution and then set the property of those files to Copy Local = True.
To set the C...
How does Java handle integer underflows and overflows and how would you check for it?
...tic boolean willAdditionOverflow(int left, int right) {
if (right < 0 && right != Integer.MIN_VALUE) {
return willSubtractionOverflow(left, -right);
} else {
return (~(left ^ right) & (left ^ (left + right))) < 0;
}
}
public static boolean willSubtracti...
How can I convert an RGB image into grayscale in Python?
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320
How about doing it with Pillow:
from PIL import Image
img = Image.open('image.png').convert('LA...
Performant Entity Serialization: BSON vs MessagePack (vs JSON)
...:2} is stored in a file and you want to update the value of "a" from 1 to 2000.
With MessagePack, 1 uses only 1 byte but 2000 uses 3 bytes. So "b" must be moved backward by 2 bytes, while "b" is not modified.
With BSON, both 1 and 2000 use 5 bytes. Because of this verbosity, you don't have to move...