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How can I catch a ctrl-c event?
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174
signal isn't the most reliable way as it differs in implementations. I would recommend using s...
Prepend a level to a pandas MultiIndex
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138
A nice way to do this in one line using pandas.concat():
import pandas as pd
pd.concat([df], ...
Truncate a list to a given number of elements
What method truncates a list--for example to the first 100 elements--discarding the others (without iterating through individual elements)?
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How to return an array from JNI to Java?
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120
If you've examined the documentation and still have questions that should be part of your init...
What is “:-!!” in C code?
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1711
This is, in effect, a way to check whether the expression e can be evaluated to be 0, and if ...
Positioning MKMapView to show multiple annotations at once
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answered Mar 22 '14 at 1:27
Code CommanderCode Commander
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What are the differences between a multidimensional array and an array of arrays in C#?
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{
// Code size 7 (0x7)
.maxstack 8
IL_0000: ldarg.0
IL_0001: ldarg.1
IL_0002: ldelem.ref
IL_0003: ldarg.2
IL_0004: ldarg.3
IL_0005: stelem.i4
IL_0006: ret
} // end of method Program::SetElementAt
.method private hidebysig static void SetElementAt(int32[0...,0...] '...
Uninstall old versions of Ruby gems
...# choose which ones you want to remove
gem uninstall rjb
# remove version 1.1.9 only
gem uninstall rjb --version 1.1.9
# remove all versions less than 1.3.4
gem uninstall rjb --version '<1.3.4'
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Python - Create a list with initial capacity
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128
def doAppend( size=10000 ):
result = []
for i in range(size):
message= "some u...