我能找到的最接近的是
In Ruby,how do I check if method “foo=()” is defined?,但只有当方法是公共的时,它才有效,即使在类块内.
我想要的是：
class Foo
private
def bar
"bar"
end
magic_private_method_defined_test_method :bar #=> true
end
我尝试过的：
class Foo
private
def bar
"bar"
end
respond_to? :bar #=> false
#this actually calls respond_to on the class,and so respond_to :superclass gives true
defined? :bar #=> nil
instance_methods.include?(:bar) #=> false
methods.include?(:bar) #=> false
method_defined?(:bar) #=> false
def bar
"redefined!"
end # redefining doesn't cause an error or anything
public
def bar
"redefined publicly!"
end #causes no error,behaves no differently whether or not #bar had been defined prevIoUsly
end