Re: array and pointers

[Gautier Write-only <gautier@fakeaddress.nil>]

shoko:

# what is wwrong in the following code?:
# 
# type Arr is Array(Item range<>) of Integer;
# a:Arr:=(1,2,2,2,3,4,3) ;
# type n_array_Ptr is access Arr;
# n: n_array_Ptr;
# 
# begin
#      n:= new Array_filter(a);
# 
#      put_line("hello");

A good idea is to read what the compiler says.
Here a test with GNAT:

arrrrrrr.adb:9:14: "Array_filter" is undefined

Okay, surely you meant "Arr" instead of "Array_filter".

     n:= new Arr(a); 

Let's try again:

arrrrrrr.adb:9:17: if qualified expression was meant, use apostrophe
arrrrrrr.adb:9:18: expect subtype mark for index constraint

If you want to copy a into the new n.all you have to use apostrophe

     n:= new Arr'(a); 

HTH
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Gautier  --  http://www.mysunrise.ch/users/gdm/gsoft.htm

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