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Google Authenticator implementation in Python
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153
I wanted to set a bounty on my question, but I have succeeded in creating solution. My problem s...
Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
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Note that array semantics and syntax was changed in Xcode beta 3 version (blog post), so the question no longer applies. The following answer applied to beta 2:
It's for performance reasons. Basically, they try to avoid copying arrays as long as they can (and claim "C-like performance...
In a javascript array, how do I get the last 5 elements, excluding the first element?
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362
You can call:
arr.slice(Math.max(arr.length - 5, 1))
If you don't want to exclude the first...
Convert Object to JSON string
...to be converted to JSON string
I got a link http://www.devcurry.com/2010/03/convert-javascript-object-to-json.html
but it need to have json2.js do jQuery has a native method to do this?
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In-memory size of a Python structure
Is there a reference for the memory size of Python data stucture on 32- and 64-bit platforms?
7 Answers
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List directory in Go
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373
You can try using the ReadDir function in the io/ioutil package. Per the docs:
ReadDir rea...
Changing column names of a data frame
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Use the colnames() function:
R> X <- data.frame(bad=1:3, worse=rnorm(3))
R> X
bad worse
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
R> colnames(X) <- c("good", "better")
R> X
good better
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
You can also...
How to create a temporary directory and get the path / file name in Python
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Samuel Rossille
16k1818 gold badges5353 silver badges8282 bronze badges
answered Jul 11 '10 at 15:45
PhilippPhilipp
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Split string every nth character?
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>>> line = '1234567890'
>>> n = 2
>>> [line[i:i+n] for i in range(0, len(line), n)]
['12', '34', '56', '78', '90']
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