NAME
Math::SymbolicX::Calculator - A representation of a Symbolic Calculator
SYNOPSIS
# You probably want to use on of the interfaces instead such as
# Math::SymbolicX::Calculator::Interface::Shell
use Math::SymbolicX::Calculator;
my $calc = Math::SymbolicX::Calculator->new();
my $cmd = $calc->new_command(...);
# ...
$calc->execute($cmd);DESCRIPTION
This class represents the state of a symbolic calculator. It is mainly a glorified state hash of variables and their contents.
It can execute commands which are represented by Math::SymbolicX::Calculator::Command objects and which operate on the symbol table on some way.
Any slot of the symbol table may either contain a Math::Symbolic tree or a Math::Symbolic::Custom::Transformation object.
METHODS
new
Returns a new Calculator object.
new_command
This method is a short-cut to Math::SymbolicX::Calculator::Command's new method and creates a new command object which can be executed using the Calculator object.
execute
Executes the command given as first argument. The command should be a Math::SymbolicX::Calculator::Command object. Returns any return values of the command's execution. (This may be a list!)
stash
Accesses the symbol table hash with the symbol name given as first argument. Valid symbol names match the regex /[A-Za-z][A-Za-z0-9_]*/.
(This is read only.)
get_transformation
First argument must be a symbol name. Accesses the Calculator symbol table to fetch a transformation from it that is saved as the symbol.
If the smybol table contains a transformation in the specified slot, that transformation is returned.
If it contains a formula, it manufactures a transformation from that formula which amounts to replacing the specified symbol with the formula.
If an error occurrs, an error message will be returned instead of a Math::Symbolic::Custom::Transformation object.
SEE ALSO
Math::SymbolicX::Calculator::Command, Math::SymbolicX::Calculator::Interface::Shell
Math::Symbolic, Math::Symbolic::Custom::Transformation
AUTHOR
Steffen Müller, <smueller@cpan.org>
COPYRIGHT AND LICENSE
Copyright (C) 2006, 2013 by Steffen Müller
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.6 or, at your option, any later version of Perl 5 you may have available.