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Symbol#to_proc returns a lambda Proc since 3.0.0 #2483

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Mar 20, 2021
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Symbol#to_proc returns a lambda Proc since 3.0.0 #2483

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7 changes: 7 additions & 0 deletions refm/api/src/_builtin/Symbol
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Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,13 @@ self に対応する Proc オブジェクトを返します。
Proc#callの第一引数をレシーバとして、 self という名前のメソッドを
残りの引数を渡して呼びだします。

#@since 3.0.0
生成される Proc オブジェクトは lambda です。
#@samplecode
:object_id.to_proc.lambda? # => true
#@end
#@end

#@samplecode 明示的に呼ぶ例
:to_i.to_proc["ff", 16] # => 255 ← "ff".to_i(16)と同じ
#@end
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