Method: Diff::LCS.__position_hash

Defined in:
lib/gems/diff-lcs-1.1.2/lib/diff/lcs.rb

.__position_hash(enum, interval = 0 .. -1)) ⇒ Object

Returns a hash mapping each element of an Enumerable to the set of positions it occupies in the Enumerable, optionally restricted to the elements specified in the range of indexes specified by interval.



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# File 'lib/gems/diff-lcs-1.1.2/lib/diff/lcs.rb', line 923

def __position_hash(enum, interval = 0 .. -1)
  hash = Hash.new { |hh, kk| hh[kk] = [] }
  interval.each do |ii|
    kk = enum.kind_of?(String) ? enum[ii, 1] : enum[ii]
    hash[kk] << ii
  end
  hash
end