[fpc-pascal] Array clearing
nc-gaertnma at netcologne.de
Thu Apr 13 14:58:11 CEST 2017
On Thu, 13 Apr 2017 19:15:13 +0700
Ryan Joseph <ryan at thealchemistguild.com> wrote:
> > On Apr 13, 2017, at 7:08 PM, Mattias Gaertner <nc-gaertnma at netcologne.de> wrote:
> >> as I understood from (http://wiki.freepascal.org/Dynamic_array<http://wiki.freepascal.org/Dynamic_array>), SetLength will create a copy of the array and free the memory of the shorter array. In this case, a lot of memory operations and copy operations are performed thus degrading the performances of the code.
> > Correct.
> Why is it copying the array and freeing instead of resizing the existing block (realloc)? That sounds crazy but I don’t know how memory managers work.
It does not free the elements.
It frees the array.
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