Re: Integers-related trap in Lua 5.3

[Philipp Janda <siffiejoe@...>]

Am 16.05.2016 um 16:50 schröbte Luiz Henrique de Figueiredo:
> > >      print( num( 1,000,000,000,000 ) )    --> 1000000000000.0
> > >      print( num( 2,012,014,144,567 ) )    --> 2012014144567.0
> > >      print( num( 1,000,000,000,000,000,000,000 ) )    --> 1e+21
> > It should be possible to write a token filter that identifies the
> > num() function and transforms the input into a float in scientific
> > notation at compile time, to avoid the O(n) runtime overhead.
>
> Indeed, but it'd be safer if num accepted strings only:
> 	num"1,000,000,000,000"
>
> Using this syntax, a token filter is even easier to write.

No need for a token filter for this syntax. A normal function with 
memoization should be good enough.

Philipp