Re: Arrays oddities
- From: Mike Pall <mike-1403@xxxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Mon, 31 Mar 2014 11:24:39 +0200
Alain Meunier wrote:
> 1) Why can we allocate a value in an array out of the bound ?
Allocate? You mean access. The FFI is a low-level interface. It
doesn't do bounds-checking (which isn't possible on C types in
general, anyway). http://luajit.org/ext_ffi_semantics.html#policy
> 2) Should not an array be faster than a table ?
It is. If properly used in a realistic benchmark that actually
tests array accesses (which is a single-cycle op) and not the
random variations in something else (~ thousands of cycles).
--Mike
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