Get the function name from it's body in Ruby

Question

Say I have a function:

def foo()
puts getFunctionIAMIn()
end

I want the output to be:"foo" And if I have this code:

def foo1()
puts getFunctionIAMIn()
end

I want the output to be:"foo1"

The question, in a different phrasing, how do I realize getFunctionIAMIn() ? — user1134991, Mar 06 '14 at 13:26

Arup Rakshit · Answer 1 · 2014-03-06T13:59:14.790

5

Just write as below using __method__:

def foo()
  puts __method__
end

Above is correct, but __callee__ sounds more technically correct.

__method__ returns defined name, and __callee__ returns called name.They are same usually, but different in a aliased method.

def foo
  [__method__, __callee__]
end

alias bar foo
p foo #=> [:foo, :foo]
p bar #=> [:foo, :bar]

edited Mar 06 '14 at 13:59

answered Mar 06 '14 at 13:28

Arup Rakshit

1

You beat me by 8 seconds :D – Severin Mar 06 '14 at 13:31
Do you know how it is different from `__callee__`? – sawa Mar 06 '14 at 13:39
1

@sawa Look here https://www.ruby-forum.com/topic/4415281 – Arup Rakshit Mar 06 '14 at 13:47
@Stefan No they are not... :) – Arup Rakshit Mar 06 '14 at 13:48
@ArupRakshit Thanks, it was your own question. – sawa Mar 06 '14 at 13:53
@sawa Got your point.. `__callee__` is more technically correct.. Let me edit. – Arup Rakshit Mar 06 '14 at 13:54
@ArupRakshit I have *generated* PDFs in many ways but never parsed one. This is still related to the question, right? ;) – Stefan Mar 06 '14 at 14:16
@Stefan Need a help on this.. :) Don't know how would I unstuck me from there.. :( – Arup Rakshit Mar 06 '14 at 14:18

score 2 · Answer 2 · answered Mar 06 '14 at 13:29

2

You can use __method__ for that:

def test_method
  __method__
end

answered Mar 06 '14 at 13:29

Severin

Do you thin your answer and my one is different ? – Arup Rakshit Mar 06 '14 at 13:31

2 Answers2