On 20/12/2011 18:12, bearophile wrote:
<snip>
Because in that code I have used three times a type (TF), auto allows to remove
only
one of them. The alias is not the best solution (a better solution is to put
that code
into a templated function), but repeating the same generic type more than one
time is
usually a source of bugs.
I don't quite understand - why not just use float as it is? OK, so abbreviating it to TF
saves 9 characters on that line, but the alias declaration and its trailing line break
take up 16 characters, so you're not saving space at all.
Moreover, the style guide discourages meaningless type aliases. (OK, so there are things
I disagree with there, like using spaces not tabs for indentation, but that's another matter.)
- std.gc.malloc returns the array with correct length according to my quick
test, so the
use of [0..x] is redundant
Really? Well, as I have said I have not tested that code.
Generally GC functions return a void*, so to create an array I think you need
to slice
it...
If that were the case, the OP's code wouldn't have compiled. I made out that the OP was
getting these errors at runtime, not compiletime.
What is the code of your quick test?
<snip>
import std.stdio, std.gc;
void main() {
size_t x = 42;
float[] f = cast(float[]) std.gc.malloc(x*4);
writefln(f.length);
alias float TF;
f = (cast(TF*)std.gc.malloc(x * TF.sizeof))[0 .. x];
writefln(f.length);
}
Stewart.
