https://issues.dlang.org/show_bug.cgi?id=12633
Issue ID: 12633 Summary: std.conv.to for fixed-size arrays too Product: D Version: D2 Hardware: All OS: All Status: NEW Keywords: rejects-valid Severity: enhancement Priority: P1 Component: Phobos Assignee: nob...@puremagic.com Reporter: bearophile_h...@eml.cc I think this should work: void main() { import std.conv: to; const s2 = ["10", "20"]; immutable int[] a1 = s2.to!(int[]); // OK. assert(a1.length == 2); immutable int[] a2 = s2.to!(int[2]); // Error. immutable int[2] a3 = s2.to!(int[2]); // Error. } DMD 2.065 gives: ...\dmd2\windows\bin\..\..\src\phobos\std\conv.d(1398): Error: cannot implicitly convert expression (w.data()) of type int[] to int[2] [more errors] It's useful when you read pairs of numbers from a file, to be sure every line has two of them. And in theory the creation of the a3 array could even be @nogc. --