> F# has a number of these specific implementations but they're kind of "hard-coded" in the language rather than fully extensible.
That's not true. You can extend the language yourself with "computation expressions" (and that's in fact how the 'async', 'let!' et al keywords are implemented).
That's not true. You can extend the language yourself with "computation expressions" (and that's in fact how the 'async', 'let!' et al keywords are implemented).