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- Subject: Re: Symmetry between language and C API (Was: (not) handling new programming idioms with grace
- From: Dirk Laurie <dirk.laurie@...>
- Date: Mon, 23 Jul 2018 17:20:39 +0200
2018-07-23 16:47 GMT+02:00 Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br>:
>> The problem with the concatenation operator is that it concatenates
>> just two values.
>
> Yes, but it is associative and "a..b..c..d" generates a *one*
> instruction, not *three*.
It's perfect in an actual expression like that.
But a function join(...) that just concatenates all its arguments,
respecting metamethods, is so easy to provide in the API and
so hard to do in pure Lua.
