September 05, 2010 std.typecons.Rebindable with arrays | ||||
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Currently (dmd 2.048) this is the signature of Rebindable: template Rebindable(T) if (is(T == class) || is(T == interface) || isArray!(T)) Is it meangful to "rebind" immutable static arrays? In D2 they now are values, so the rebinding means overwriting all its items, so them being constant is useless. So this looks better: template Rebindable(T) if (is(T == class) || is(T == interface) || isDynamicArray!T) Is it meangful to rebind a dynamic array? There is already a syntax to perform what rebindable does: const(int)[] arr; Rebinding a dynamic array may be a bit useful for generic code. I have tried Rebindable with a dynamic array: import std.typecons: Rebindable; void main() { const int[] a1 = [1, 2, 3]; const int[] a2 = [2, 3, 4]; auto r = Rebindable!(typeof(a1))(a1); r = a2; } But it seems there are some problems. Bye, bearophile |
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