Re: [Gretl-devel] String as pointer argument
Am 13.05.2015 um 09:41 schrieb Sven Schreiber:
Hi,
a new thingy:
<hansl>
function void scheck (int a, string *s)
printf "%s\n", s
end function
string hey = "ho"
scheck(2, &hey)
</hansl>
And I just discovered that not using the pointer form seems to work with
a null default value:
<hansl>
function void scheck (string s[null])
if isnull(s)
print "null"
else
print s
endif
end function
scheck()
</hansl>
I'm mentioning this because according to the docs under the heading
"Function parameters: optional refinements" it says: "For optional
pointer and list arguments (see section 13.4), the special default value
null." So this case isn't covered by the description.
OTOH if I try this null value with an integer argument (and no pointer),
it indeed does _not_ work.
thanks,
sven