On 23 Μαϊ 2007, at 11:11 ΠΜ, Daniël Mantione wrote:
Op Wed, 23 May 2007, schreef Michalis Kamburelis:
Christos Chryssochoidis wrote:
Hi,
I tried to write some function that returned a dynamic array, and
realized that this isn't allowed. Why? After all one can specify an
array of variable length as type for variables... Furthermore -
if I'm
not mistaken - a dynamic array is implemented internally as a
pointer,
and so there wouldn't be any runtime overhead for returning a
dynamic
array from a function.
It *is* allowed. The only trick is that you have to declare a type
for
your dynamic array, i.e. you have to write something like
I think this is one more example open array versus dynamic array
confusion. Arrays declared in type statements are dynamic arrays;
arrays
declared in procedure/function headers are open arrays. You can
return a
dynamic array, but not an open array.
Daniël_______________________________________________
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Yes, I have noticed that if you first wrap a dynamic array in a type
definition then you can declare a function returning such an array,
but it seemed to me as an unnecessary complication of things and as
an inconsistency in the language. However, the distinction between
dynamic and open arrays that D.Mantione says, explains this
complication.
Thanks very much for your answers,
Christos
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