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How to extract the n-th elements from a list of tuples?
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and use **dict to create keyword arguments: def test(foo=3, bar=3): return foo*bar then d = {'bar': 9, 'foo'=12}; print test(**d)
– Wayne Werner
Jul 22 '10 at 12:58
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Objective-C formatting string for boolean?
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Shouldn't the output strings be: "Yes" and "No" :P
– Ben S
Apr 8 '10 at 22:22
131
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How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
...ing compiler features. This means that I am not allowed to write a program and execute it, but I should just write a program that could drive the compiler to compute this sum while compilation and print the result when compilation completes. As a hint, he told me that I may use generics and pre-proc...
Does JavaScript have “Short-circuit” evaluation?
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So short circuit it is the standard in JS?
– GibboK
Sep 23 '12 at 17:42
1
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Django - what is the difference between render(), render_to_response() and direct_to_template()?
Whats the difference (in language a python/django noob can understand) in a view between render() , render_to_response() and direct_to_template() ?
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MySQL load NULL values from CSV data
...is will do what you want. It reads the fourth field into a local variable, and then sets the actual field value to NULL, if the local variable ends up containing an empty string:
LOAD DATA INFILE '/tmp/testdata.txt'
INTO TABLE moo
FIELDS TERMINATED BY ","
LINES TERMINATED BY "\n"
(one, two, three, ...
How do I move a redis database from one server to another?
I currently have a live redis server running on a cloud instance and I want to migrate this redis server to a new cloud instance and use that instance as my new redis server. If it were MySQL, I would export the DB from the old server and import it into the new server. How should I do this with redi...
Setting different color for each series in scatter plot on matplotlib
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I don't know what you mean by 'manually'. You can choose a colourmap and make a colour array easily enough:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
x = np.arange(10)
ys = [i+x+(i*x)**2 for i in range(10)]
colors = cm.rainbow(np.linspace(0, 1, len(ys)))
f...
Calculate date from week number
...date of the first day in the week (monday here in Europe). I know the year and the week number? I'm going to do this in C#.
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Split comma-separated strings in a column into separate rows
...odified according to Rich Scriven's comment,
Jaap's two data.table methods and two dplyr / tidyr approaches,
Ananda's splitstackshapesolution,
and two additional variants of Jaap's data.table methods.
Overall 8 different methods were benchmarked on 6 different sizes of data frames using the micro...