09-19-2012
You need to modify the passed value? What is the type? Pass by reference is a means to one or more ends: modification by the callee and avoiding copy overhead, at the cost of additional reference variables and loading and dereferencing reference values. If cost and modification are not concerns, pass by whatever works with the least source code.
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LEARN ABOUT MOJAVE
ppi::token::bom5.18
PPI::Token::BOM(3) User Contributed Perl Documentation PPI::Token::BOM(3)
NAME
PPI::Token::BOM - Tokens representing Unicode byte order marks
INHERITANCE
PPI::Token::BOM
isa PPI::Token
isa PPI::Element
DESCRIPTION
This is a special token in that it can only occur at the beginning of documents. If a BOM byte mark occurs elsewhere in a file, it should
be treated as PPI::Token::Whitespace. We recognize the byte order marks identified at this URL:
<http://www.unicode.org/faq/utf_bom.html#BOM>
UTF-32, big-endian 00 00 FE FF
UTF-32, little-endian FF FE 00 00
UTF-16, big-endian FE FF
UTF-16, little-endian FF FE
UTF-8 EF BB BF
Note that as of this writing, PPI only has support for UTF-8 (namely, in POD and strings) and no support for UTF-16 or UTF-32. We support
the BOMs of the latter two for completeness only.
The BOM is considered non-significant, like white space.
METHODS
There are no additional methods beyond those provided by the parent PPI::Token and PPI::Element classes.
SUPPORT
See the support section in the main module
AUTHOR
Chris Dolan <cdolan@cpan.org>
COPYRIGHT
Copyright 2001 - 2011 Adam Kennedy.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
The full text of the license can be found in the LICENSE file included with this module.
perl v5.18.2 2011-02-25 PPI::Token::BOM(3)