NAME

Spreadsheet::Engine::Function::is - base class for IS functions

SYNOPSIS

use base 'Spreadsheet::Engine::Function::is';

sub calculate { ... }

DESCRIPTION

This provides a base class for spreadsheet functions that perform IS checks (ISBLANK(), ISERR()) etc. mathematical functions on a single argument (ABS(), SIN(), SQRT() etc).

INSTANCE METHODS

calculate

Subclasses should provide 'calculate' function that will be called with the major type and the full type of the referenced value.

HISTORY

This is a Modified Version of code extracted from SocialCalc::Functions in SocialCalc 1.1.0

COPYRIGHT

Portions (c) Copyright 2005, 2006, 2007 Software Garden, Inc. All Rights Reserved.

Portions (c) Copyright 2007 Socialtext, Inc. All Rights Reserved.

Portions (c) Copyright 2008 Tony Bowden

LICENCE

The contents of this file are subject to the Artistic License 2.0; you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.perlfoundation.org/artistic_license_2_0