34 lines
980 B
Ruby
34 lines
980 B
Ruby
#see: https://github.com/rails/rails/pull/12065
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if rails4?
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module ActiveRecord
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class Result
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private
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def hash_rows
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@hash_rows ||=
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begin
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# We freeze the strings to prevent them getting duped when
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# used as keys in ActiveRecord::Base's @attributes hash
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columns = @columns.map { |c| c.dup.freeze }
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@rows.map { |row|
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# In the past we used Hash[columns.zip(row)]
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# though elegant, the verbose way is much more efficient
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# both time and memory wise cause it avoids a big array allocation
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# this method is called a lot and needs to be micro optimised
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hash = {}
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index = 0
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length = columns.length
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while index < length
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hash[columns[index]] = row[index]
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index += 1
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end
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hash
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}
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end
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end
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end
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end
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end
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