Silly struct behaviour

[H. S. Teoh via Digitalmars-d-learn]

On Thu, Jul 13, 2017 at 06:07:31PM +0000, JN via Digitalmars-d-learn wrote:
> Consider:
> 
> struct Foo
> {
> 	int bar;
> }
> 
> void processFoo(Foo foo)
> {
> }
> 
> void main()
> {
> 	Foo f = {bar: 5};
> 	processFoo(f);                // ok
> 	processFoo(Foo(5));           // ok
> 	processFoo({bar: 5});         // fail
> 	processFoo(Foo({bar: 5}));    // fail
> }
> 
> 
> Whyyyy D? It makes no sense, the compiler knows what is the type of
> the first processFoo arg anyway...

It's not quite so simple. Consider for example:

	struct Foo { int bar; }
	struct Oof { int bar; }

	void process(Foo foo) { }
	void process(Oof oof) { formatDisk(); }

	void main() {
		process({bar : 5}); // which overload should get called?
	}

As for `Foo({bar : 5})`, that's just wrong syntax. Just write `Foo(5)`
and it will work.


T

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