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What is the reason for having '//' in Python? [duplicate]
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I actually like this style better... I can remember in atleast one language I've used (VB?) the differentiating factor was / vs \ ... but I could never remember which was which!
– Matthew Scharley
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Get selected value in dropdown list using JavaScript
...options[e.selectedIndex].value;
Would make strUser be 2. If what you actually want is test2, then do this:
var e = document.getElementById("ddlViewBy");
var strUser = e.options[e.selectedIndex].text;
Which would make strUser be test2
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Find merge commit which include a specific commit
...1_for_c>..master --ancestry-path --merges
This will however also show all the merges that happened after h, and between e and g on feature.
Comparing the result of the following commands:
git rev-list <SHA-1_for_c>..master --ancestry-path
git rev-list <SHA-1_for_c>..master --fi...
Why does i = i + i give me 0?
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static int i = 1;
public static void main(String[] args) throws InterruptedException {
while (true){
i = i + i;
System.out.println(i);
Thread.sleep(100);
}
}
out put:
2
4
8
16
32
64
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1073741824
-214748364...
Git diff to show only lines that have been modified
...s to prevent grep removing the original color and highlighting the matched string.
We are matching for lines that start with red (\e[31m) or green (\e[32m) escape codes.
The $'...' (ANSI-C quoting syntax) or -P (perl syntax) is to let grep to interpret \e or \033 as an ESC character.
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MongoDB and “joins” [duplicate]
I'm sure MongoDB doesn't officially support "joins". What does this mean?
11 Answers
1...
argparse module How to add option without any argument?
....add_argument('--foo', '-f', action='store_true') _StoreTrueAction(option_strings=['--foo', '-f'], dest='foo', nargs=0, const=True, default=False, type=None, choices=None, help=None, metavar=None) >>> parser.parse_args() Namespace(foo=False) >>> print args.foo Traceback (m...
Node.js Logging
...ny library which will help me to handle logging in my Node.Js application? All I want to do is, I want to write all logs into a File and also I need an options like rolling out the file after certain size or date.
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How to define hash tables in Bash?
...ecuting your script directly, or execute script with bash script. (Not actually executing a Bash script with Bash does happen, and will be really confusing!)
You declare an associative array by doing:
declare -A animals
You can fill it up with elements using the normal array assignment operator....
How do I get PyLint to recognize numpy members?
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I had the same issue here, even with the latest versions of all related packages (astroid 1.3.2, logilab_common 0.63.2, pylon 1.4.0).
The following solution worked like a charm: I added numpy to the list of ignored modules by modifying my pylintrc file, in the [TYPECHECK] section:
[...