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Can you clarify a few things, these are bikeshed issues but they bother me none the less.

* Why was fn foo(bar: int) -> int chosen and not fn foo(bar:int): int? * Why annotations within comments? Annotations aren't comments it smells of C bolt-on. Why not keyword annotations?

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Annotations don't live within comments. The syntax for annotations is #[annotation]. They are part of the grammar.

Because with the arrow syntax for results it makes it cleaner for functions that return functions?

fn (x:int) -> fn@(y:int, z:int) -> int

Also passing functions to functions:

fn foo(bar: fn(baz: int) -> int) -> int

Instead of

fn foo(bar: fn(baz: int) : int) : int

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