by_col

by_col()

Instance Public methods

Returns a duplicate table object, in column mode. This is handy for chaining in a single call without changing the table mode, but be aware that this method can consume a fair amount of memory for bigger data sets.

This method returns the duplicate table for chaining. Don't chain destructive methods (like []=()) this way though, since you are working with a duplicate.

Links:

https://github.com/ruby/ruby/blob/58ff66b18b676293108a625f161342a7a4755df9/lib/csv.rb#L601

doc_ruby_on_rails

2015-04-01 20:11:38

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