Re: Array concatenation & optimisation

2024-07-22 Thread IchorDev via Digitalmars-d-learn
On Monday, 22 July 2024 at 12:03:33 UTC, Quirin Schroll wrote: this has no effect on whether the function is `@nogc`. That is a highly amusing (but obviously understandable) logical contradiction that I’d never considered before. ‘Sometimes you can’t use non-GC code in `@nogc` code.’

Re: Array concatenation & optimisation

2024-07-22 Thread Nick Treleaven via Digitalmars-d-learn
On Sunday, 21 July 2024 at 10:33:38 UTC, Nick Treleaven wrote: On Sunday, 21 July 2024 at 05:43:32 UTC, IchorDev wrote: Does this mean that array literals are *always* separately allocated first, or is this usually optimised out? My understanding is that they do not allocate if used to initia

Re: Array concatenation & optimisation

2024-07-22 Thread Quirin Schroll via Digitalmars-d-learn
On Sunday, 21 July 2024 at 05:43:32 UTC, IchorDev wrote: Obviously when writing optimised code it is desirable to reduce heap allocation frequency. With that in mind, I'm used to being told by the compiler that I can't do this in `@nogc` code: ```d void assign(ref int[4] a) @nogc{ a[] = [1,3,6