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**Subject**: **Re: boolean operators**
**From**: Glenn Maynard <glenn@...>
**Date**: Thu, 28 Sep 2006 16:00:00 -0400

On Wed, Sep 27, 2006 at 10:50:27PM -0500, Rici Lake wrote:
> >This is why % and // seem out of place to me; integers are not a
> >fundamental type in Lua, only numbers are. (Granted, % is defined
> >for floating point numbers, but I have no idea what use it has and
> >its primary use seems intended to be integers.)
>
> It is sometimes useful to do integer arithemetic; a useful subset of
> Lua numbers are integers. A number of interesting algorithms involve
> integer arithmetic.
Integers are bit masks; bit masks are as much fundamental types in
Lua as integers, by this logic. Also, % is floating point modulus;
looking at a particular subset of its uses (integer remainder) and
wanting a paired operator with that seems like rationalizing a sqrt()
operator because a subset of multiplication is squaring.
> But as you say, % (and //) are well-defined for non-integers, and they
> do have uses even if they haven't been useful for you. (I have $1.38 in
> my pocket, and apples cost $0.16 each. How many apples can I buy?)
floor(1.38/0.16), or 1.38/0.16 if I have a knife. I don't need a new
operator to do that.
--
Glenn Maynard

**References**:
**Re: boolean operators, ***Glenn Maynard*
**Re: boolean operators, ***Greg Falcon*
**Re: boolean operators, ***Glenn Maynard*
**Re: boolean operators, ***Rici Lake*
**Re: boolean operators, ***Glenn Maynard*
**Re: boolean operators, ***Rici Lake*
**Re: boolean operators, ***Glenn Maynard*
**Re: boolean operators, ***Rici Lake*
**Re: boolean operators, ***Glenn Maynard*
**Re: boolean operators, ***Rici Lake*