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Regex group capture in R with multiple capture-groups
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118
str_match(), from the stringr package, will do this. It returns a character matrix with one co...
Select multiple columns in data.table by their numeric indices
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185
For versions of data.table >= 1.9.8, the following all just work:
library(data.table)
dt &...
jQuery - Create hidden form element on the fly
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edited Mar 9 '10 at 10:12
answered Mar 9 '10 at 10:02
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How can I make pandas dataframe column headers all lowercase?
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180
You can do it like this:
data.columns = map(str.lower, data.columns)
or
data.columns = [x....
How do I find if a string starts with another string in Ruby?
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edited Jan 11 '13 at 23:53
the Tin Man
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Convert Go map to json
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112
If you had caught the error, you would have seen this:
jsonString, err := json.Marshal(datas)...
Rails filtering array of objects by attribute value
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174
Try :
This is fine :
@logos = @attachments.select { |attachment| attachment.file_type == 'lo...
What is the best Java email address validation method? [closed]
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How to remove an element from a list by index
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18 Answers
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How to efficiently build a tree from a flat structure?
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18 Answers
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