Compiler silently ignores some method overloads

pineapple via Digitalmars-d-learn digitalmars-d-learn at puremagic.com
Sun May 8 06:28:47 PDT 2016


In my struct I have some methods with these signatures:

     void opIndexAssign(T)(in GLColor!T color, in int x, in int y)
     void opIndexAssign(T1, T2)(in GLColor!T1 color, in Vector2!T2 
vector)
     void opIndexAssign(in uint value, in int x, in int y)

And when I try to do this:

     thing[2, 2] = GLColor!float(1, 1, 1);

I get a compiler error like so:

     E:\Dropbox\Projects\d\mach\sdl\surface.d(434): Error: none of 
the overloads of 'opIndexAssign' are callable using argument 
types (GLColor!float, int, int), candidates are:
     E:\Dropbox\Projects\d\mach\sdl\surface.d(406):        
mach.sdl.surface.Surface.opIndexAssign(const(uint) value, 
const(int) x, const(int) y)

Meaning the overloads using GLColor are apparently silently 
ignored?

I had the same problem with another method. Here are my overloads:

     void fill(in uint color)
     void fill(T)(in GLColor!T color)
     void fill(in ubyte r, in ubyte g, in ubyte b, in ubyte a = 
255)
     void fill(in Box!int box, in uint color)
     void fill(T)(in Box!int box, in GLColor!T color)
     void fill(in Box!int box, in ubyte r, in ubyte g, in ubyte b, 
in ubyte a = 255)
     void fill(in SDL_Rect* rect, in uint color)

And when I try to do this:

     thing.fill(GLColor!float(1, 1, 1));

I get another compiler error:

     E:\Dropbox\Projects\d\mach\sdl\surface.d(429): Error: none of 
the overloads of 'fill' are callable using argument types 
(GLColor!float), candidates are:
     E:\Dropbox\Projects\d\mach\sdl\surface.d(179):        
mach.sdl.surface.Surface.fill(const(uint) color)
     E:\Dropbox\Projects\d\mach\sdl\surface.d(187):        
mach.sdl.surface.Surface.fill(const(ubyte) r, const(ubyte) g, 
const(ubyte) b, const(ubyte) a = cast(ubyte)255u)
     E:\Dropbox\Projects\d\mach\sdl\surface.d(191):        
mach.sdl.surface.Surface.fill(const(Box!int) box, const(uint) 
color)
     E:\Dropbox\Projects\d\mach\sdl\surface.d(199):        
mach.sdl.surface.Surface.fill(const(Box!int) box, const(ubyte) r, 
const(ubyte) g, const(ubyte) b, const(ubyte) a = cast(ubyte)255u)
     E:\Dropbox\Projects\d\mach\sdl\surface.d(203):        
mach.sdl.surface.Surface.fill(const(SDL_Rect*) rect, const(uint) 
color)

The module containing the GLColor struct is definitely imported 
correctly, and I don't see how this could be an issue with the 
GLColor since its (admittedly meager) unittests all pass.

What am I missing?


More information about the Digitalmars-d-learn mailing list