On Mon, 28 Jun 2010 18:17:47 +0200
Jürgen Hestermann <juergen.hesterm...@gmx.de> wrote:
>
>
> Paul Michell schrieb:
> > I realise that 'Array Of Single' declares a dynamic array, but is there
> > any equivalent syntax for static data arrays in the same way that
> > strings litterals are in effect, variable length static declarations.
>
> You have to realize, that dynamic arrays are actually pointers (to the array
> and other administration data). So you cannot define anything to such arrays
> at declaration time because no memory is assigned to this pointer yet. You
> have to use setlength to assign memory at runtime (just as getmem would do)
> and only then you can fill it with data.
Sure, but this is just a matter of convention and support by a given compiler:
type Integers = array of Integer;
var ints : Integers = [1,2,3];
could work as expected by automatically sizing, allocating and initialising.
How else could work languages that have an array/sequence/list literal notation?
Note that this is not much different from
var text : String = "abc";
since string vars must indeed be kinds of (pointed) dynamic arrays, I guess...
(Or am I wrong on this?)
The burden caused by the absence of such a notation for dynamic arrays is
something we can accept and get used to; what advantage does it bring? It
forces initialisation to be written in loops (if the content nicely follows a
pattern) or sequences of element assignemnts (else). Maybe it's only me?
Denis
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