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Repeat string to certain length
What is an efficient way to repeat a string to a certain length? Eg: repeat('abc', 7) -> 'abcabca'
13 Answers
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What is the purpose of setting a key in data.table?
I am using data.table and there are many functions which require me to set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables.
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Declare slice or make slice?
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Merging 2 branches together in GIT
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@Yohanelly yes, you can reset git head to any commit.
– Mohamed Shaban
Sep 3 at 1:53
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How can I remove specific rules from iptables?
... Both solutions are nice, but this one won't work in a scripted setting when the line number is unknown. So the other solution is more general, and therefore more correct, IMO.
– Jeroen
Nov 17 '13 at 5:14
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Unable to authenticate with Git Bash to Visual Studio Team Services
...tials if you want to use other Git clients outside of Visual Studio...
To set up alternate creds in Visual Studio Team Services (VSTS), click on your name/icon on the top right -> Security -> Alternate Authentication Credentials
Edit: Add more details about this from VSTS (taken from the al...
Is there a command to list all Unix group names? [closed]
I know there is the /etc/group file that lists all users groups.
3 Answers
3
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What are all codecs and formats supported by FFmpeg?
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jQuery - Detect value change on hidden input field
...n't automatically fire the .change() event. So, wherever it is that you're setting that value, you also have to tell jQuery to trigger it.
function setUserID(myValue) {
$('#userid').val(myValue)
.trigger('change');
}
Once that's the case,
$('#userid').change(function(){
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Saving a Numpy array as an image
I have a matrix in the type of a Numpy array. How would I write it to disk it as an image? Any format works (png, jpeg, bmp...). One important constraint is that PIL is not present.
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