Method: Traject::Macros::Transformation#unique

Defined in:
lib/traject/macros/transformation.rb

#unique ⇒ Object

calls ruby uniq! on accumulator, removes any duplicate values

Examples:

to_field "something", extract_marc("245:240"), unique


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# File 'lib/traject/macros/transformation.rb', line 109

def unique
  lambda do |rec, acc|
    acc.uniq!
  end
end