Dirk Meijer wrote:
hi,
'return' is used to return a value, and end the method processing.
at the end of a method, 'return' is indeed not needed, and simply
that value will suffice, though i think a return looks nicer ;-)
a good example where a return is needed, is this:
def method(arg)
if arg.class==String
return "invalid argument"
end
#rest of processing
end
this looks a lot nicer than placing your entire method in if/else
code. greetings, Dirk.
In this case you wouldn't use return values to flag this error. It's is a
typical case for exceptions.
def mett(arg)
raise ArgumentError, "#{arg.inspect} is not a String" unless String ===
arg
# further processing
end
And taking this even further, in the light of Duck Typing (TM) usually no
type checks of this kind are made at all. :-)
Kind regards
robert
