Perl6 RFC Librarian wrote :
|| =head1 TITLE
||
|| Single quotes don't interpolate \' and \\
||
|| =head1 VERSION
||
|| Maintainer: Nicholas Clark <[EMAIL PROTECTED]>
|| Date: 28 Sep 2000
|| Last Updated: 29 Sep 2000
|| Mailing List: [EMAIL PROTECTED]
|| Number: 328
|| Version: 2
|| Status: Developing
[ ... ]
|| =head1 DISCUSSION
||
|| Limited discussion so far because I wrongly issued the RFC to
|| [EMAIL PROTECTED] The only responses were from two people both
|| of whom valued their ability to use single quotes to make strings including
|| making strings containing single quotes. Here docs already provide a means to
|| get "quote nothing, everything is literal". One argued that
||
|| Single-quoted strings need to be able to contain single quotes,
|| which means some escape mechanism is required.
||
|| which I did not agree with.
Being able to create strings that contain arbitrary characters is
essential for program generators. With the current quoting method,
you can take a string, preface any ' or \ with a \, wrap the result
with '' and you're ready to insert it into the code you're creating.
With the proposed definiton, you'd have to use a q## form, after
scanning the string in hopes of finding a character, like #, that
wasn't contained in the string. With a here document, you'd instead
have to ensure that you create an end of here doc token that doesn't
happen to be contained as a line in the string. (Here doc strings
are also awkward for some purposes, having the actual content of the
string on a separate line interferes with the normal flow for reading
the code, unless the string is multi-line data.)
--
Sleep should not be used as a substitute | John Macdonald
for high levels of caffeine -- FPhlyer | [EMAIL PROTECTED]
