https://d.puremagic.com/issues/show_bug.cgi?id=12186
Summary: Problems with partially inferred type for immutable
lambda argument
Product: D
Version: D2
Platform: x86
OS/Version: Windows
Status: NEW
Keywords: rejects-valid
Severity: normal
Priority: P2
Component: DMD
AssignedTo: nob...@puremagic.com
ReportedBy: bearophile_h...@eml.cc
--- Comment #0 from bearophile_h...@eml.cc 2014-02-16 16:53:07 PST ---
Perhaps this shows a compiler problem:
void main() {
import std.algorithm: map;
immutable int[][] mat;
mat.map!((in r) => 0); // OK
mat.map!((const r) => 0); // OK
mat.map!((immutable int[] r) => 0); // OK
mat.map!((immutable r) => 0); // Error
}
DMD 2.065beta3 gives:
...\dmd2\src\phobos\std\algorithm.d(466,23): Error: template D main.__lambda4
cannot deduce function from argument types !()(immutable(int[])), candidates
are:
test.d(7,14): test.main.__lambda4
...\dmd2\src\phobos\std\algorithm.d(500,19): Error: template D main.__lambda4
cannot deduce function from argument types !()(immutable(int[])), candidates
are:
test.d(7,14): test.main.__lambda4
...\dmd2\src\phobos\std\algorithm.d(512,23): Error: template D main.__lambda4
cannot deduce function from argument types !()(immutable(int[])), candidates
are:
test.d(7,14): test.main.__lambda4
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