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  1. #!/usr/bin/env ruby
  2. # -*- coding: utf-8 -*-
  3.  
  4. def chihaya
  5.   # 引数にブロックが与えられているか調べる
  6.   unless block_given?
  7.     raise ArgumentError, "ブロックの指定が必要です"
  8.   end
  9.  
  10.   # ブロックに2つの値を与える
  11.   yield 7, 2
  12. end
  13.  
  14. chihaya{ |a, b| puts a + b } # "9" を表示
  15. chihaya{ |a, b| puts a * b } # "14" を表示
  16. chihaya                      # 例外を発生
Runtime error #stdin #stdout 0s 4760KB
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Standard input is empty
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9
14
https://ideone.com/UhG3C
language:
Ruby (ruby 2.5.5)
created:
11 years ago
visibility:
public

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