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Overriding id on create in ActiveRecord
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13 Answers
13
Active
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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...
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...
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...
How to import module when module name has a '-' dash or hyphen in it?
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edited Dec 2 '11 at 13:56
answered Dec 2 '11 at 2:00
S...
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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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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?: 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....
What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
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337
Running a command through /usr/bin/env has the benefit of looking for whatever the default ver...
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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