From: Alex Young <alex@...>
Date: 2007-12-07T20:33:12+09:00
Subject: Re: function like "function_exits"

Robert Dober wrote:
> On Dec 7, 2007 8:35 AM, Peter Bunyan <peter.bunyan@gmail.com> wrote:
>>> Thanks for your answer Robert.
>>> It's not a method but a simple function like
>>> def foo()
>>>    #some code
>>> end
>>>
>>> is there something like :
>>> functions.exist?('foo')
>> A method and a function are the same thing. Also, check this out.
>>
>> def foo
>>   puts "Foo is being called."
>> end
>>
>> methods.include? "foo"
>> => true
> you surely mean false here, right?
> the methods method of the toplevel does not seem to include the user
> defined methods, or is this just a bug?

They're included in IRB:

irb(main):001:0> def foo
irb(main):002:1> puts "Foo is being called"
irb(main):003:1> end
=> nil
irb(main):004:0> methods.include? "foo"
=> true

but not in a script:

alex@shaxam:~$ cat toplevel.rb
def foo
   puts "Foo is being called"
end
p methods.include?("foo")

alex@shaxam:~$ ruby toplevel.rb
false

-- 
Alex