Is returning void functions inside void functions a feature or an artifact?

[H. S. Teoh]

On Mon, Aug 02, 2021 at 04:42:14PM +0000, Rekel via Digitalmars-d-learn wrote:
[...]
> Also slightly off topic, but when would one use an alias instead of a
> function/delegate? I haven't used aliases before.

When you want a compile-time binding that could potentially elide the
indirect function call to a delegate.

	// This generates a specialized template instance with
	// `callback` bound to the passed-in compile-time argument, for
	// each call to `myFunc`.
	auto myFunc(alias callback)(...) { ...  }

	// This is a single common function that receives an opaque
	// runtime delegate and binds it at runtime.
	auto myFunc(int delegate(...) callback, ...) { ...  }


T

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An elephant: A mouse built to government specifications. -- Robert Heinlein