Dne st 23. 12. 2020 1:00 uživatel Steven Schveighoffer via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com> napsal:
> On 12/22/20 5:44 PM, Daniel Kozak wrote: > > On Tue, Dec 22, 2020 at 10:15 PM Andre Pany via Digitalmars-d-learn > > <digitalmars-d-learn@puremagic.com > > <mailto:digitalmars-d-learn@puremagic.com>> wrote: > > > > Hi, > > > > I am really confused, why is this valid: > > void sample(string[string] s = string[string].init){} > > > > while this causes syntax errors? > > > > void sample_invalid1(double[string] s = double[string].init){} > > void sample_invalid2(int[int] s = int[int].init){} > > > > Kind regards > > André > > > > > > As has been said this is an oddity in the grammar. But why would anyone > > need to use this anyway? > > > > void sample_invalid2(int[int] s = int[int].init){} > > > > seems really awful to me anyway. > > Yeah: > > void sample_valid(int[int] s = null) > > -Steve Yes AA.init is null per doc. https://dlang.org/spec/hash-map.html#construction_and_ref_semantic
