Improvement of Symbol and Proc

Issue #4146 has been updated by Nobuyoshi N…

Related to Feature #8987: map/collect extension which handles arguments
added


Feature #4146: Improvement of Symbol and Proc
https://bugs.ruby-lang.org/issues/4146#change-47054

  • Author: Nobuyoshi N.
  • Status: Rejected
  • Priority: Normal
  • Assignee: Nobuyoshi N.
  • Category: core
  • Target version:

=begin
現在Symbol#to_procで %w[12 45 32].map(&:to_i) のようなことはできますが、
引数を付けてメソッドを呼ぶことはできません。Symbolリテラルに引数を付け
たらその引数と共にメソッドを呼ぶProcを作る構文というのはどうでしょうか。

%w[12 45 32].map(&:to_i(9)).map(&:*(2)) #=> [22, 82, 58]
%w[abc def ghi].map(&:[1]) #=> [“b”, “e”, “h”]
=end

—Files--------------------------------
symbol_lambda.diff (5.39 KB)

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