Hi all!
I’m trying to understand some code in the stdlib (drb/drb.rb, to be
particular).
Is there any difference between:
module Foo
module_function
def bar()
"baz"
end
end
and
module Foo
def Foo.bar()
"baz"
end
end
?
Am I right in guessing that the former gives both a module and a mixin
function of the same name, whereas the latter gives on a module function?
Or are they in fact identical?
William
module Foo
module_function
module_function make a private method and a public singleton method.
def bar()
"baz"
end
end
For example
svg% cat b.rb
#!/usr/bin/ruby
module A
def a
puts "a"
end
module_function :a
def self.b
puts "b"
end
end
A.a
A.b
include A
a
b
svg%
svg% b.rb
a
b
a
./b.rb:18: undefined local variable or method `b' for main:Object (NameError)
svg%
Guy Decoux