The question is in the title.
My parameter can be either a string or a symbol and depending upon which it is I want to perform different actions. Is there a way to check for this in Ruby?
+4
A:
def foo(arg)
if arg.is_a?(Symbol)
do_symbol_stuff
else
do_string_stuff
end
end
sepp2k
2009-10-06 22:25:37
Thank you, that's perfect
Damian
2009-10-06 22:27:53
There is a nicer way to write this. Use the Class#=== method like this: Symbol === arg. It is much more readable.
johannes
2009-10-07 11:10:21
That's a matter of taste of course, but personally I think "if arg is a symbol" reads more naturally than "if arg equals equals equals symbol".
sepp2k
2009-10-07 11:34:15
A:
Another solution
def foo(arg)
case arg
when Symbol
do symbol stuff
when String
do string stuff
else
do error stuff
end
end
Scott
2009-10-07 14:08:53