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Python: Select subset from list based on index set
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answered Jul 5 '10 at 11:32
kennytmkennytm
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how does array[100] = {0} set the entire array to 0?
How does the compiler fill values in char array[100] = {0}; ? What's the magic behind it?
4 Answers
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How do I check if a string is valid JSON in Python?
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just a note... json.loads('10') doesn't throw the ValueError and I'm sure '10' is not a valid json ...
– wahrheit
Apr 16 '14 at 13:23
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Numpy first occurrence of value greater than existing value
...rst occurrence are returned.") and doesn't save another list.
In [2]: N = 10000
In [3]: aa = np.arange(-N,N)
In [4]: timeit np.argmax(aa>N/2)
100000 loops, best of 3: 52.3 us per loop
In [5]: timeit np.where(aa>N/2)[0][0]
10000 loops, best of 3: 141 us per loop
In [6]: timeit np.nonzero(a...
Replace a newline in TSQL
...eed something like this:
SELECT REPLACE(REPLACE(@str, CHAR(13), ''), CHAR(10), '')
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python's re: return True if string contains regex pattern
...;>> word = 'ba|'; regexp.search(word) <_sre.SRE_Match object at 0x101030b28> . You can drop all the pipe symbols.
– radtek
Jan 27 '17 at 14:51
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Reversing a linked list in Java, recursively
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edited Feb 10 '19 at 21:59
piritocle
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answered Dec 10 '08 at 2:28
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C# short/long/int literal format?
...l ? 1 : 0);
– or hor
May 30 '16 at 10:40
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Just to add that upper case and lower case of these l...
What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
...me than "In"?
– Tom Bushell
Jan 19 '10 at 22:40
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I'm not sure I like it - I like the brevity of...
What's the difference between eval, exec, and compile?
...ass a reference to exec:
>>> call_later(exec, 'print(42)', delay=1000)
File "<stdin>", line 1
call_later(exec, 'print(42)', delay=1000)
^
SyntaxError: invalid syntax
Which a pattern that someone might actually have used, though unlikely;
Or use it in a lis...