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How to check whether a string is Base64 encoded or not
... if a string is base64 encoded or not:
^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)?$
In base64 encoding, the character set is [A-Z, a-z, 0-9, and + /]. If the rest length is less than 4, the string is padded with '=' characters.
^([A-Za-z0-9+/]{4})* means the string starts with 0 ...
Python: Check if one dictionary is a subset of another larger dictionary
... think of: d1.viewitems() <= d2.viewitems(). Timeit runs showed over a 3x performance improvement. If not hashable, even using iteritems() instead of items() leads to about a 1.2x improvement. This was done using Python 2.7.
– Chad
Mar 29 '16 at 21:47
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How can I generate UUID in C#
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233
You are probably looking for System.Guid.NewGuid().
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Is Enabling Double Escaping Dangerous?
... edited Feb 15 '18 at 22:24
t3chb0t
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answered Sep 21 '09 at 7:43
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'dragleave' of parent element fires when dragging over children elements
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answered Dec 25 '12 at 5:35
Ben RudolphBen Rudolph
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How to comment in Vim's config files: “.vimrc”?
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3 Answers
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Commands executed from vim are not recognizing bash command aliases
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edited May 29 '11 at 13:11
answered Jan 10 '11 at 0:48
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Ask for User Permission to Receive UILocalNotifications in iOS 8
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Since iOS 8 you need to ask user's permission to show notifications from your app, this applies...