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Getting indices of True values in a boolean list
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Use enumerate, list.index returns the index of first match found.
>>> t = [False, False, False, False, True, True, False, True, False, False, False, False, False, False, False, False]
>>> [i for i, x in enumerate(t) if x]
[4, ...
Git: add vs push vs commit
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git add adds files to the Git index, which is a staging area for objects prepared to be commited.
git commit commits the files in the index to the repository, git commit -a is a shortcut to add all the modified tracked files to the index first.
git push s...
How to convert JSON to a Ruby hash
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What about the following snippet?
require 'json'
value = '{"val":"test","val1":"test1","val2":"test2"}'
puts JSON.parse(value) # => {"val"=>"test","val1"=>"test1","val2"=>"test2"}
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How to change plot background color?
...es later
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1) # nrows, ncols, index
You used the stateful API (if you're doing anything more than a few lines, and especially if you have multiple plots, the object-oriented methods above make life easier because you can refer to specific figures, plot o...
C# XML Documentation Website Link
...t;
/// <param name="hwnd"></param>
/// <param name="index"></param>
/// <returns>
/// Testlink in return: <a href="http://stackoverflow.com">here</a>
/// </returns>
public static IntPtr GetWindowLongPtr(IntPtr hwnd, int inde...
Escaping a forward slash in a regular expression
My question is a simple one, and it is about regular expression escaping. Do you have to escape a forward slash / in a regular expression? And how would you go about doing it?
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How to wait for a keypress in R?
...ture to it? press esc keep to exit loop ?
– I_m_LeMarque
Mar 21 '18 at 18:59
4
@nnn this does not...
Android Studio: Javadoc is empty on hover
...t.
Even after resizing it though, I still see it return to it's tiny size quite often... I'm glad I have my docs back, even if it does mean dealing with this annoyance.
share
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improve this answer
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Create an Array of Arraylists
...type over the array particularly for this question.
What if my need is to index n different arraylists.
With declaring List<List<Integer>> I need to create n ArrayList<Integer> objects manually or put a for loop to create n lists or some other way, in any way it will always be my...
Select objects based on value of variable in object using jq
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Adapted from this post on Processing JSON with jq, you can use the select(bool) like this:
$ jq '.[] | select(.location=="Stockholm")' json
{
"location": "Stockholm",
"name": "Walt"
}
{
"location": "Stockholm",
"name": "Donald"
}
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