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**Subject**: **Re: Arithmetic on strings**
**From**: Roberto Ierusalimschy <roberto@...>
**Date**: Wed, 13 Jun 2012 15:30:45 -0300

> > Concerning (2): not all types have metatables so boolean is still
> > somewhat of a problem then. (I can live with it.)
>
> We can use the metatables for strings (if at least one argument is
> a string)! This already works both in 5.1 and 5.2:
>
> [...]
PS: the same trick works for numbers and numeric operators.
-- Roberto

**References**:
**Re: Arithmetic on strings, ***steve donovan*
**Re: Arithmetic on strings, ***liam mail*
**Re: Arithmetic on strings, ***Andrew Starks*
**Re: Arithmetic on strings, ***Javier Guerra Giraldez*
**Re: Arithmetic on strings, ***Roberto Ierusalimschy*
**Re: Arithmetic on strings, ***liam mail*
**Re: Arithmetic on strings, ***Hans Hagen*
**Re: Arithmetic on strings, ***Roberto Ierusalimschy*
**Re: Arithmetic on strings, ***Hans Hagen*
**Re: Arithmetic on strings, ***Roberto Ierusalimschy*