Ruby on Rails - ActiveSupport: Array Extensions -

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in extensions array class (rails/activesupport/lib/active_support/core_ext/array/access.rb) following function defined:

# returns beginning of array +position+. def to(position)   if position >= 0     take position + 1   else     self[0..position]   end end

why defined this? why can't do:

def to(position)   self[0..position] end

according commit message of change in rails code, looks trying "avoid creating range objects".

when arr[0..3], 0..3 part becomes range object, gets used calculate subarray. i'm guessing trying save memory avoiding this.


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