On Monday, 9 April 2012 at 00:25:57 UTC, bearophile wrote:
Currently this code compiles and runs with no errors:
class Foo {
override string toString() const {
return "Foo";
}
}
void main() {
import std.stdio;
const Foo[] foos = [new Foo];
writeln(foos);
}
Output, DMD 2.059beta2:
[Foo]
While this gives errors:
class Foo {
override string toString() /*const*/ {
return "Foo";
}
}
void main() {
import std.stdio;
const Foo[] foos = [new Foo];
writeln(foos);
}
Output, DMD 2.059beta2:
[snip]
Current std.format doesn't support const class formatting with
upcasting to mutable Object and using mutable toString().
Is this good/expected?
It is a gap between language const system and object.Object class
interface.
I think Phobos should not break const system in basic.
Kenji Hara
