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Python strftime - date without leading 0?
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edited Apr 8 '17 at 7:42
C S
8061212 silver badges1919 bronze badges
answered Jan 15 '10 at 16:38
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Calculating Pearson correlation and significance in Python
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201
You can have a look at scipy.stats:
from pydoc import help
from scipy.stats.stats import pear...
Multiprocessing: How to use Pool.map on a function defined in a class?
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edited Jun 29 at 15:46
scriptmonster
2,4791818 silver badges2727 bronze badges
answered A...
pandas: How do I split text in a column into multiple rows?
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207
+50
This sp...
Ternary operator is twice as slow as an if-else block?
...duced by the X86 and X64 JITs for each of these cases.
X86, if/then
32: foreach (int i in array)
0000007c 33 D2 xor edx,edx
0000007e 83 7E 04 00 cmp dword ptr [esi+4],0
00000082 7E 1C jle 000000A0
00000084 8B 44 ...
How do I draw a shadow under a UIView?
...hat I should use CGContextSetShadow() to draw the shadow, but the Quartz 2D programming guide is a little vague:
16 Answe...
How to count the number of true elements in a NumPy bool array
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265
You have multiple options. Two options are the following.
numpy.sum(boolarr)
numpy.count_nonz...
Redirecting Output from within Batch file
...r to End-Of-File multiple times.
@echo off
command1 >output.txt
command2 >>output.txt
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commandN >>output.txt
A better way - easier to write, and faster because the file is opened and positioned only once.
@echo off
>output.txt (
command1
command2
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commandN
)
Ano...
Oracle Differences between NVL and Coalesce
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COALESCE is more modern function that is a part of ANSI-92 standard.
NVL is Oracle specific, it was introduced in 80's before there were any standards.
In case of two values, they are synonyms.
However, they are implemented differently.
NVL always evaluates both arguments, whil...