NAME
Math::Symbolic::Base - Base class for symbols in symbolic calculations
SYNOPSIS
use Math::Symbolic::Base;DESCRIPTION
This is a base class for all Math::Symbolic::* terms such as Math::Symbolic::Operator, Math::Symbolic::Variable and Math::Symbolic::Constant objects.
EXPORT
None by default.
METHODS
Method to_string
Default method for stringification just returns the object's value.
Method value
value() evaluates the Math::Symbolic tree to its numeric representation.
value() without arguments requires that every variable in the tree contains a defined value attribute. Please note that this refers to every variable object, not just every named variable.
value() with one argument sets the object's value.
value() with named arguments (key/value pairs) associates variables in the tree with the value-arguments if the corresponging key matches the variable name. (Can one say this any more complicated?)
Example: $tree->value(x => 1, y => 2, z => 3, t => 0) assigns the value 1 to any occurrances of variables of the name "x", aso.
Method set_value
set_value() returns nothing.
set_value() requires named arguments (key/value pairs) that associate variable names of variables in the tree with the value-arguments if the corresponging key matches the variable name. (Can one say this any more complicated?)
Example: $tree->set_value(x => 1, y => 2, z => 3, t => 0) assigns the value 1 to any occurrances of variables of the name "x", aso.
As opposed to value(), set_value() assigns to the variables permanently and does not evaluate the tree.
Method simplify
Minimum method for term simpilification just clones.
Method apply_derivatives
Minimum method for application of derivatives just clones.
Method term_type
Returns the type of the term. This is a stub to be overridden.
AUTHOR
Steffen Mueller, <symbolic-module at steffen-mueller dot net>
New versions of this module can be found on http://steffen-mueller.net or CPAN.