Re: Drawing the line between speed and simplicity/elegance

[Rena <hyperhacker@...>]

On Sat, May 9, 2015 at 8:53 PM, Sean Conner <sean@conman.org> wrote:
> It was thus said that the Great Rena once stated:
>> On Sat, May 9, 2015 at 1:01 PM, Roberto Ierusalimschy
>> <roberto@inf.puc-rio.br> wrote:
>> >> Using the C API will make LuaJIT's performance bottom out. If you're
>> >> worried about performance across VMs, stick to pure Lua.
>> >
>> > That is not a valid advice across VMs. C code is much faster than
>> > (non-JIT) Lua code. So, not using the C API will hurt Lua performance.
>> >
>> > -- Roberto
>> >
>>
>> But Lua also has some overhead with calling into C, doesn't it? So
>> some common operations are faster in pure Lua than in C? I'm sure I've
>> heard that.
>
>   But don't those "common operations" already call into C?

Only if you're referring to the Lua VM being implemented in C, which
isn't the same as calling an external C function (a lua_CFunction).

-- 
Sent from my Game Boy.