[ruby-list:50630] instance_evalで定数が見えない
From:
MASAKI Haruka <yek@...>
Date:
2017-12-28 18:24:26 UTC
List:
ruby-list #50630
=E6=AD=A3=E6=9C=A8=E3=81=A7=E3=81=99=E3=80=82
Ruby 2.2=E3=81=AE=E3=81=A8=E3=81=8D=E3=81=AB=E3=82=82=E8=A8=80=E5=8F=8A=E3=
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=E3=80=81instance_eval=E3=81=A7=E3=81=AF=E8=A6=8B=E3=81=88=E3=81=BE=E3=81=
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=8B=95=E3=81=AA=E3=81=AE=E3=81=A7=E3=81=97=E3=82=87=E3=81=86=E3=81=8B=E3=80=
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***
=E3=82=B3=E3=83=BC=E3=83=89:
class ClassA
CONST=3D"Hello"
end
obj =3D ClassA.new
class <<obj
def hi1
p CONST
end
end
obj.instance_eval do
def hi2
p CONST
end
end
=E7=B5=90=E6=9E=9C:
"Hello"
Traceback (most resent call last):
1: fron instance_eval_test.rb:20:in `<main>'
instance_eval_test.rb:15:in `hi2': uninitialized constant CONST (NameError)
***