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Ruby の exit と exit! の違い

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exit は例外処理を記述すれば処理を続行出来る。 exit! は例外処理を一切行わずプログラムを終了する。

def proc_exit
  puts "proc_exit"
  exit
rescue SystemExit
  puts "rescued a SystemExit exception"
end

def proc_exit!
  puts "proc_exit!"
  exit!
rescue SystemExit
  puts "rescued a SystemExit exception"
end

proc_exit
proc_exit!

出力

proc_exit
rescued a SystemExit exception
proc_exit!

参考サイト

https://docs.ruby-lang.org/ja/latest/method/Kernel/m/exit=21.html

siman
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