• Jack (3/3) Feb 28 2021 isn't clear for me if reserve() does preallocate memory so that
• Adam D. Ruppe (3/6) Feb 28 2021 Slicing never allocates memory. reserve extends the capacity for
• Jack (2/9) Feb 28 2021 thanks
• bachmeier (3/6) Mar 01 2021 You may potentially find this article of use:

Jack <jckj33 gmail.com> writes:

isn't clear for me if reserve() does preallocate memory so that 
that operator like arr ~= x can use previously allocate memory by 
reserve() or it's just used in slices like b = arr[x .. y]?

Adam D. Ruppe <destructionator gmail.com> writes:

On Monday, 1 March 2021 at 03:07:19 UTC, Jack wrote:
 isn't clear for me if reserve() does preallocate memory so that 
 that operator like arr ~= x can use previously allocate memory 
 by reserve() or it's just used in slices like b = arr[x .. y]?

Slicing never allocates memory. reserve extends the capacity for 
the ~= operator.

Jack <jckj33 gmail.com> writes:

On Monday, 1 March 2021 at 03:12:42 UTC, Adam D. Ruppe wrote:
 On Monday, 1 March 2021 at 03:07:19 UTC, Jack wrote:
 isn't clear for me if reserve() does preallocate memory so 
 that that operator like arr ~= x can use previously allocate 
 memory by reserve() or it's just used in slices like b = arr[x 
 .. y]?

 Slicing never allocates memory. reserve extends the capacity 
 for the ~= operator.

thanks

bachmeier <no spam.net> writes:

On Monday, 1 March 2021 at 03:07:19 UTC, Jack wrote:
 isn't clear for me if reserve() does preallocate memory so that 
 that operator like arr ~= x can use previously allocate memory 
 by reserve() or it's just used in slices like b = arr[x .. y]?

You may potentially find this article of use:

https://dlang.org/articles/d-array-article.html