• choi heejo (17/17) Oct 16 2010 hi there, please read this code:
• Ivo Kasiuk (4/39) Oct 17 2010 In D2, "this" in a struct is a reference type, not a pointer type. So

choi heejo <azurenote.enseed gmail.com> writes:

hi there, please read this code:

import std.stdio;

struct test(T)
{
alias typeof(*this) type;
T a;
}


void main()
{
test!(int).type t;
 t.a = 123;
 writeln(t.a);
}

I guessed it would work. but the compiler said:

main.d(7): Error: can only * a pointer, not a 'test!(int)'
main.d(14): Error: template instance main.test!(int) error instantiating

what is the problem?

Ivo Kasiuk <i.kasiuk gmx.de> writes:

choi heejo wrote:
 hi there, please read this code:
=20
=20
 import std.stdio;
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=20
 struct test(T)
 {
 alias typeof(*this) type;
 T a;
 }
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=20
=20
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 void main()
 {
 test!(int).type t;
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 t.a =3D 123;
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 writeln(t.a);
 }
=20
=20
 I guessed it would work. but the compiler said:
=20
=20
 main.d(7): Error: can only * a pointer, not a 'test!(int)'
 main.d(14): Error: template instance main.test!(int) error
 instantiating
=20
=20
 what is the problem?
=20

In D2, "this" in a struct is a reference type, not a pointer type. So
just replace "typeof(*this)" by "typeof(this)" and then it should work.

Ivo