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igaiga/method_or_not.rb

Created October 16, 2019 07:13
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method_or_not.rb
# Rubyでメソッドと、そうではないもの（式とか）の見分け方
# methodメソッドで取得できたらメソッド
method(:p) #=> #<Method: main.p>
# ↑とれたのでメソッド
method(:for)
#=> NameError: undefined method `for' for class `#<Class:#<Object:0x00007fd82d0d22f0>>'
# ↑とれないのでメソッドではない
5.method(:times) #=> #<Method: Integer#times>
# ↑とれたのでメソッド
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