Thank you Bertrand, this helps me a lot!

It seems that comparing to zero is a bit tricky. I only get results with

string s; // or string s="lolcat";
_typeof(s) == _typeof(0);

Is there a neater way to do this?
Signature Met vriendelijke groet / With kind regards / mit besten Grüßen,
Coen Schalkwijk
Software Engineer

coen.schalkwijk@rtl.nl

coen@rtlinteractief.nl

+31 (0)35 671 8915


On 13-1-2011 15:21, Bertrand LUPART wrote: 
Another problem is that 'string s;' or 'string s=0;' evaluate to 'int' when using %t and 'zero_type()' doesn't help either.

Not a problem for pike but for any other language using the generated XML.

As a workaround, have you considered using typeof()/_typeof() ?

----8<----8<----8<----

string s; string t=0; string u=""; string v="foo";
zero_type(s);

(1) Result: 0

zero_type(t);

(2) Result: 0

zero_type(u);

(3) Result: 0

zero_type(v);

(4) Result: 0

typeof(s);

(5) Result: string

typeof(t);

(6) Result: string

typeof(u);

(7) Result: string

typeof(v);

(8) Result: string

_typeof(s);

(9) Result: zero

_typeof(t);

(10) Result: zero

_typeof(u);

(11) Result: string

_typeof(v);

(12) Result: string
---->8---->8---->8----