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jQuery Tips and Tricks
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edited Mar 23 '11 at 18:51
community wiki
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Fastest way to replace NAs in a large data.table
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system.time(a_gdata = f_gdata(dt1))
user system elapsed
18.805 12.301 134.985
system.time(a_andrie = f_andrie(dt1))
Error: cannot allocate vector of size 305.2 Mb
Timing stopped at: 14.541 7.764 68.285
system.time(f_dowle(dt1))
user system elapsed
7.452 4.144 19.590 # EDIT h...
Invalid syntax when using “print”? [duplicate]
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232
That is because in Python 3, they have replaced the print statement with the print function.
T...
How to split (chunk) a Ruby array into parts of X elements? [duplicate]
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341
Take a look at Enumerable#each_slice:
foo.each_slice(3).to_a
#=> [["1", "2", "3"], ["4", "...
Remove and Replace Printed items [duplicate]
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3 Answers
3
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How to save a list as numpy array in python?
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163
First of all, I'd recommend you to go through NumPy's Quickstart tutorial, which will probably ...
Python way of printing: with 'format' or percent form? [duplicate]
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Use the format method, especially if you're concerned about Python 3 and the future. From the documentation:
The formatting operations described here are modelled on C's printf()
syntax. They only support formatting of certain builtin types. The
use of a binary operator mean...
What is the inverse function of zip in python? [duplicate]
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349
lst1, lst2 = zip(*zipped_list)
should give you the unzipped list.
*zipped_list unpacks the ...
Creating NSData from NSString in Swift
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In Swift 3
let data = string.data(using: .utf8)
In Swift 2 (or if you already have a NSSt...
How to change Android Studio's editor font?
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Thanks, that worked. Not very intuitive UX, generally you save something after you have edited it, not before! I'll accept once it lets m...