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psql: FATAL: Ident authentication failed for user “postgres”
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Add a new item to a dictionary in Python [duplicate]
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How do I install Python OpenCV through Conda?
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edited Jun 30 '17 at 10:00
Quanlong
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Stacked Tabs in Bootstrap 3
...plement left-aligned stacked tabs using the Tab jquery plugin in Bootstrap 3 where tabs are rendered vertically to the left of tab content, rather than on top. When I try the following;
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How to merge lists into a list of tuples?
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In Python 2:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>> zip(list_a, list_b)
[(1, 5), (2, 6), (3, 7), (4, 8)]
In Python 3:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>> list(zip(list_a, li...
What regular expression will match valid international phone numbers?
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How to remove multiple indexes from a list at the same time? [duplicate]
...nce.
If you have an arbitrary collection of indexes, then:
indexes = [2, 3, 5]
for index in sorted(indexes, reverse=True):
del my_list[index]
Note that you need to delete them in reverse order so that you don't throw off the subsequent indexes.
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How do I extract a sub-hash from a hash?
...azlerGazler
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What's the difference between “groups” and “captures” in .NET regular expressions?
...bout it. Here's what the famous Jeffrey Friedl has to say about it (pages 437+):
Depending on your view, it either adds
an interesting new dimension to the
match results, or adds confusion and
bloat.
And further on:
The main difference between a Group
object and a Capture object is...