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Create list of single item repeated N times
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809
You can also write:
[e] * n
You should note that if e is for example an empty list you get a...
Why does the C# compiler go mad on this nested LINQ query?
...machine) and very long time to compile (actually I get IO exception after 10 minutes).
1 Answer
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How do I find if a string starts with another string in Ruby?
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answered Nov 12 '10 at 20:02
steenslagsteenslag
71.2k1414 gold badges126126 silver badges157157 bronze badges
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How to base64 encode image in linux bash / shell
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You need to use cat to get the contents of the file named 'DSC_0251.JPG', rather than the filename itself.
test="$(cat DSC_0251.JPG | base64)"
However, base64 can read from the file itself:
test=$( base64 DSC_0251.JPG )
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What is the preferred/idiomatic way to insert into a map?
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edited Nov 26 '10 at 18:37
user229044♦
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How do I format a long integer as a string without separator in Java?
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edited Jan 22 '16 at 20:19
RAnders00
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answere...
pandas read_csv and filter columns with usecols
...andas as pd
from StringIO import StringIO
csv = r"""dummy,date,loc,x
bar,20090101,a,1
bar,20090102,a,3
bar,20090103,a,5
bar,20090101,b,1
bar,20090102,b,3
bar,20090103,b,5"""
df = pd.read_csv(StringIO(csv),
header=0,
index_col=["date", "loc"],
usecols=["date", "loc", "x"],
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Python Matplotlib figure title overlaps axes label when using twiny
...tlib, but at least for 1.3.1, this is simply:
plt.title(figure_title, y=1.08)
This also works for plt.suptitle(), but not (yet) for plt.xlabel(), etc.
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Custom Python list sorting
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60
It's documented here.
The sort() method takes optional arguments for controlling the
comp...
what is faster: in_array or isset? [closed]
...t-in function.
These can be demonstrated by using an array with values (10,000 in the test below), forcing in_array to do more searching.
isset: 0.009623
in_array: 1.738441
This builds on Jason's benchmark by filling in some random values and occasionally finding a value that exists in the a...