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| author | Mike Guy <mjtg@cam.ac.uk> | 2001-06-12 20:10:31 +0100 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 2001-06-13 00:38:02 +0000 |
| commit | 904501ecba6b454ec215a915d312271222c5bc59 (patch) | |
| tree | 0e6fb1bcfdf71fd0c4ad8649c5bf08baa279b7cc /pod/perlop.pod | |
| parent | 765adc1d9c4681fc795fbc6fd280e4f9084879b6 (diff) | |
| download | perl-904501ecba6b454ec215a915d312271222c5bc59.tar.gz | |
Re: [ID 20010612.001] out of memory during regex compilation
Date: Tue, 12 Jun 2001 19:10:31 +0100
Message-Id: <E159scZ-0000r2-00@draco.cus.cam.ac.uk>
Subject: Re: [ID 20010612.001] out of memory during regex compilation
From: Mike Guy <mjtg@cam.ac.uk>
Date: Tue, 12 Jun 2001 19:21:01 +0100
Message-Id: <E159smj-0000wY-00@draco.cus.cam.ac.uk>
p4raw-id: //depot/perl@10545
Diffstat (limited to 'pod/perlop.pod')
| -rw-r--r-- | pod/perlop.pod | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/pod/perlop.pod b/pod/perlop.pod index 1dd564e51d..9ae391821a 100644 --- a/pod/perlop.pod +++ b/pod/perlop.pod @@ -694,9 +694,8 @@ from the next line. This allows you to write: s {foo} # Replace foo {bar} # with bar. -For constructs that do interpolate, variables beginning with "C<$>" -or "C<@>" are interpolated, as are the following escape sequences. Within -a transliteration, the first eleven of these sequences may be used. +The following escape sequences are available in constructs that interpolate +and in transliterations. \t tab (HT, TAB) \n newline (NL) @@ -711,6 +710,9 @@ a transliteration, the first eleven of these sequences may be used. \c[ control char (ESC) \N{name} named char +The following escape sequences are available in constructs that interpolate +but not in transliterations. + \l lowercase next char \u uppercase next char \L lowercase till \E @@ -736,14 +738,15 @@ and although they often accept just C<"\012">, they seldom tolerate just C<"\015">. If you get in the habit of using C<"\n"> for networking, you may be burned some day. -Subscripted variables such as C<$a[3]> or C<$href->{key}[0]> are also -interpolated, as are array and hash slices. But method calls -such as C<$obj->meth> are not interpolated. +For constructs that do interpolate, variables beginning with "C<$>" +or "C<@>" are interpolated. Subscripted variables such as C<$a[3]> or +C<$href->{key}[0]> are also interpolated, as are array and hash slices. +But method calls such as C<$obj->meth> are not. Interpolating an array or slice interpolates the elements in order, separated by the value of C<$">, so is equivalent to interpolating -C<join $", @array>. "Punctuation" arrays such C<@+> are not -interpolated. +C<join $", @array>. "Punctuation" arrays such as C<@+> are only +interpolated if the name is enclosed in braces C<@{+}>. You cannot include a literal C<$> or C<@> within a C<\Q> sequence. An unescaped C<$> or C<@> interpolates the corresponding variable, |