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digitalmars.D.learn - overring binary

reply Jethro <qyzz gr.ff> writes:
I have a custom type and I'm trying to do things like

x~1 and 1~x.

I can get x~1 no problem by overriding the op "~" but how to I 
get 1~x to convert 1 in to typeof(x)? instead of x in to 
typeof(1) so to speak?

I really want D to realize that 1~x is suppose to use ~ of x, not 
1.
Apr 07
parent rikki cattermole <rikki cattermole.co.nz> writes:
On 08/04/2017 7:46 AM, Jethro wrote:
 I have a custom type and I'm trying to do things like

 x~1 and 1~x.

 I can get x~1 no problem by overriding the op "~" but how to I get 1~x
 to convert 1 in to typeof(x)? instead of x in to typeof(1) so to speak?

 I really want D to realize that 1~x is suppose to use ~ of x, not 1.
struct Foo { int x; Foo opBinaryRight(string op)(int y) { static if (op == "~") { return Foo(x + y); } else static assert(0, "not implemented"); } } void main() { import std.stdio; writeln(1 ~ Foo(2)); }
Apr 07