NAME

Math::Expr::VarSet - Represents a set of variables and there values

SYNOPSIS

require Math::Expr::VarSet;
$s=new Math::Expr::VarSet;
$s->Set('a', 7);
$s->Get('a');

DESCRIPTION

Used to represent variables with values and substitutions.

METHODS

$s=new Math::Expr::VarSet

Create a new VarSet object.

$s->Set($var, $val)

Sets $var to $val. Returns 1 if the $var was already set to $val ore did 
not have a value previously, otherwise 0.

$s->Insert($set)

Inserts all variables from $set into this object

$s->tostr

Returns a stringrepresentation of the set, usefull for debugging.

$s->Get($var)

Returns the value of $var.