On Mon, 2004-12-13 at 11:30, houbahop -->
> thanks, very usefull answer.
>
>
> > Immutable types (e.g. strings, numbers, tuples) are generally returned
> > directly from functions, rather than returned as 'output parameters'. The
> > ability to return multiple values easily (via "return a, b, c" & "x, y, z
> > = myfunc()" generally eliminates the need for 'by reference' output
> > parameters as used by C, C++, Java and the like.
> > P.S. If you *really*, *really*, *really* want to fake output parameters,
> > just wrap them in a list:
>
> return multiple values is ok, I usualy use a function only to return one
> value, for exemple : value=IsSomething(), returning true, to include that in
> an if statement : if (isSomething(blabla) ) ... but It's not a problem to
> change that habit. and as I have read somewhere about python : "Explicit is
> better than implicit"
>
> Dominique.
I think your interpretation of the the "explicit vs. implicit" quote
might be confusing in this case. Certainly:
x = 0
def a():
something = 1
somethingelse = 2
global x
x = something
return somethingelse
y = a()
print x,y
To say "we are explicitly setting X" in a is wrong. We are returning 1
and 2. We return 2 explicitly. We return 1 by side effect.
If we want to explicitly return both, then:
def a():
something = 1
somethingelse = 2
return something,somethingelse
x,y = a()
This makes the code clear and easy to understand.
Navré je ne pas répondre en français.
- Adam DePrince
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