On Mon, 07 Nov 2011 05:49:52 -0500, bearophile <[email protected]>
wrote:
Given how much often I find this problem in D coding, is someone willing
and able to write a patch to allow code like this (it's in Bugzilla,
with normal priority)?
const struct Foo {
const int[5] a;
const int[] b;
const int[int] aa;
this(in int n) pure {
this.a[] = n; // line 6
this.b = new int[5];
this.b[0] = n; // line 8
this.aa[1] = 2; // line 9
}
}
void main() {}
The latest DMD gives:
test.d(6): Error: slice this.a[] is not mutable
test.d(8): Error: this.b[0] isn't mutable
test.d(9): Error: this.aa[1] isn't mutable
Of those, I think the only one which should be fixed is line 6.
Line 8 is invalid, because a const member is only allowed to be
initialized *once* in a constructor.
Line 9 I think is not conceptually invalid, but you aren't *assigning* aa,
you are using aa.
I would expect this to be valid:
this.aa = [1:2];
-Steve
