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How does the Brainfuck Hello World actually work?
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+100
1. Basics
To understand Brainfuck you must imagine infinite array of cells initialized by 0 each.
...[0][0][0][0][0]...
When bra...
cleanest way to skip a foreach if array is empty [duplicate]
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edited Sep 13 '18 at 10:18
answered Aug 10 '10 at 6:26
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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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10
Yeah, I believe SQL Server's equivalent is called MERGE. In general, the concept is often referred to as "UPSERT".
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What does `kill -0 $pid` in a shell script do?
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answered Jun 13 '12 at 10:16
dwalterdwalter
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How can I use if/else in a dictionary comprehension?
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MarcinMarcin
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How to test if one java class extends another at runtime?
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answered Aug 17 '10 at 16:48
meritonmeriton
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Removing duplicates from a list of lists
...sort, dogroupby, donewk:
resk = f(k)
assert k == savek
print '%10s %s' % (f.__name__, sorted(resk))
Note the sanity check (performed when you just do python nodup.py) and the basic hoisting technique (make constant global names local to each function for speed) to put things on equal f...
Creating a new column based on if-elif-else condition
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– prashanth manohar
Mar 22 '17 at 10:29
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You have to use the args parameter of the .apply func...
Python != operation vs “is not”
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310
== is an equality test. It checks whether the right hand side and the left hand side are equal ...
Python : List of dict, if exists increment a dict value, if not append a new dict
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210
That is a very strange way to organize things. If you stored in a dictionary, this is easy:
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