On 4/25/22 19:37, Salih Dincer wrote:
> a lot of errors 😀
Hm. I can't reproduce any of that. I did two things:
1) Added necessary import directives
2) Moved all expressions into the main() function
I did not change anything else. The program below compiles and works
with all these compilers:
- dmd 2.098.1
- dmd 2.099.1
- gdc 11.2.0
- ldc 1.28.1 (based on DMD v2.098.1 and LLVM 13.0.1)
Are you using a very old compiler?
import std.range;
import std.algorithm;
import std.conv;
import std.stdio;
struct Bar {
string s;
this(R)(R result) {
import std.conv : to;
this.s = result.to!string;
}
string toString() {
return s;
}
}
void main() {
auto parts = "abcdefghi".chunks(3);
auto compiled = parts.map!(a => Bar(a));
// NOTE: PLEASE IGNORE THE ERROR MESSAGES BELOW.
// EVERYTHING COMPILES AND WORKS.
auto notCompile1 = parts.map!Bar;
/* Error 1: instantiated from here: `map!(Chunks!string)`*/
auto notCompile2 = parts.map!(c => c.to!string)
.map!Bar;
/* Error 1:
/usr/src/dmd/linux/bin64/../../src/phobos/std/algorithm/iteration.d(604)
: cannot access frame pointer of `source.main.Bar`
Error 2:
/usr/src/dmd/linux/bin64/../../src/phobos/std/algorithm/iteration.d(499)
: template instance `std.algorithm.iteration.MapResult!(Bar,
MapResult!(__lambda4, Chunks!string))` error instantiating
Error 3: instantiated from here: `map!(MapResult!(__lambda4,
Chunks!string))`
*/
auto notCompile3 = parts.array.map!Bar;
/* Error 1:
/usr/src/dmd/linux/bin64/../../src/phobos/std/algorithm/iteration.d(604)
: cannot access frame pointer of `source.main.Bar`
Error 2:
/usr/src/dmd/linux/bin64/../../src/phobos/std/algorithm/iteration.d(616)
: cannot access frame pointer of `source.main.Bar`
Error 3:
/usr/src/dmd/linux/bin64/../../src/phobos/std/algorithm/iteration.d(499)
: template instance `std.algorithm.iteration.MapResult!(Bar,
Take!string[])` error instantiating
Error 4: instantiated from here: `map!(Take!string
*/
auto arr = compiled.array; /* [abc, def, ghi]
auto arr2 = str.chunks(3)
.map!(a => Bar(a))
.array;//*/
arr.writeln(": ", typeof(arr).stringof);
}
Ali
