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?: operator (the 'Elvis operator') in PHP
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543
It evaluates to the left operand if the left operand is truthy, and the right operand otherwise....
Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib
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379
I was getting the exact same error, but the above answers didn't work for me. I had to reinsta...
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...
Why are data transfer objects (DTOs) an anti-pattern?
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edited Jan 25 '10 at 3:40
Jim Ferrans
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ans...
Overriding id on create in ActiveRecord
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13 Answers
13
Active
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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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How to create a temporary directory and get the path / file name in Python
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Samuel Rossille
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answered Jul 11 '10 at 15:45
PhilippPhilipp
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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...
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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How to enable Ad Hoc Distributed Queries
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edited Jan 27 '13 at 4:16
Aaron Bertrand
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