Re: Influence of Lua on Go?

[Miles Bader <miles@...>]

steve donovan <steve.j.donovan@gmail.com> writes:
>> Any language with native support for tuples (or equivalent constructs) can
>> do multiple returns trivially, so this dates back to Lisp at least, which
>> puts it as about 1959.
>
> Ah, but there is an important difference: this code has the same
> effect in Lua and Python:
>
>     x,y = something()
>
> but in Python there is an explicit tuple type and this multiple
> assignment causes that tuple to be unpacked, which is a rather less
> efficient process.

Yeah, and "tuple based" MRV tend to have a very different ("more rigid")
feel than the looser MRV in languages like Lua and CL, and I think the
two styles often result in significantly different usage.

-Miles

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