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Is there a zip-like function that pads to longest length in Python?
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In Python 3 you can use itertools.zip_longest
>>> list(itertools.zip_longest(a, b, c))
[('a1', 'b1', 'c1'), (None, 'b2', 'c2'), (None, 'b3', None)]
You can pad with a different value than None by using the fillvalue paramet...
Matrix Transpose in Python
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310
Python 2:
>>> theArray = [['a','b','c'],['d','e','f'],['g','h','i']]
>>> zi...
What is the best way to convert an array to a hash in Ruby
...y keys or values!
Building on @John Topley's popular answer, let's try:
a3 = [ ['apple', 1], ['banana', 2], [['orange','seedless'], 3] ]
h3 = Hash[*a3.flatten]
This throws an error:
ArgumentError: odd number of arguments for Hash
from (irb):10:in `[]'
from (irb):10
The constru...
Gmail Error :The SMTP server requires a secure connection or the client was not authenticated. The s
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203
This generally happens when you try login from different time zone or IP Address Computer. Your ...
Is there a NumPy function to return the first index of something in an array?
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13 Answers
13
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When is SQLiteOpenHelper onCreate() / onUpgrade() run?
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359
SQLiteOpenHelper onCreate() and onUpgrade() callbacks are invoked when the database is actuall...
Collisions when generating UUIDs in JavaScript?
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35
My best guess is that Math.random() is broken on your system for some reason (bizarre as that s...
Fastest hash for non-cryptographic uses?
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13 Answers
13
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how to break the _.each function in underscore.js
...s, you could do something convoluted like this (link to JSFiddle):
[1, 2, 3, 4].every(function(n) {
alert(n);
return n !== 3;
});
This will alert 1 through 3, and then "break" out of the loop.
You're using underscore.js, so you'll be pleased to learn that it does provide an every method...
Python UTC datetime object's ISO format doesn't include Z (Zulu or Zero offset)
...etime.utcnow().replace(tzinfo=simple_utc()).isoformat()
'2014-05-16T22:51:53.015001+00:00'
Note that this DOES conform to the ISO 8601 format, which allows for either Z or +00:00 as the suffix for UTC. Note that the latter actually conforms to the standard better, with how time zones are represent...