Chemistry::Pattern::Atom - An atom that knows how to match
my $patt_atom = Chemistry::Pattern::Atom->new(symbol => C); $patt_atom->test_sub( sub { my ($what, $where) = @_; $where->bonds == 3 ? 1 : 0; # only match atoms with three bonds });
Objects of this class represent atoms in a pattern. This is a subclass of Chemistry::Atom. In addition to the properties of regular atoms, pattern atoms have a method for testing if they match an atom in a molecule. By default, a pattern atom matches an atom if they have the same symbol. It is possible to substitute this by an arbitrary criterion by providing a custom test subroutine.
Tests if the pattern atom matches the atom given by $atom. Returns true or false.
Specify an arbitrary test subroutine to be used instead of the default one. &my_test_sub must take two parameters; the first one is the pattern atom and the second is the atom to match. It must return true if there is a match.
Returns or sets the atom that is considered to be matched by $patt_atom.
0.27
Chemistry::Pattern
The PerlMol website http://www.perlmol.org/
Ivan Tubert-Brohman <itub@cpan.org>
Copyright (c) 2009 Ivan Tubert-Brohman. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install Chemistry::Pattern, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Chemistry::Pattern
CPAN shell
perl -MCPAN -e shell install Chemistry::Pattern
For more information on module installation, please visit the detailed CPAN module installation guide.