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| author | Jarkko Hietaniemi <jhi@iki.fi> | 2003-06-14 08:56:11 +0000 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 2003-06-14 08:56:11 +0000 |
| commit | 974da8e5aded27d81bcf7d5c0c5998c377065269 (patch) | |
| tree | 012373ee4f09ffe96e2c399b107998657fcb1c52 /pod/perlfunc.pod | |
| parent | 1ae0ae1779f56be3f5008214f23d0e0a7f3dce42 (diff) | |
| download | perl-974da8e5aded27d81bcf7d5c0c5998c377065269.tar.gz | |
Slight tweaks on the length() and chr() entries,
passing-by rewrapping on the rmdir entry.
p4raw-id: //depot/perl@19776
Diffstat (limited to 'pod/perlfunc.pod')
| -rw-r--r-- | pod/perlfunc.pod | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/pod/perlfunc.pod b/pod/perlfunc.pod index e10ca607c9..ac20efcb43 100644 --- a/pod/perlfunc.pod +++ b/pod/perlfunc.pod @@ -732,10 +732,14 @@ chr(0x263a) is a Unicode smiley face. Note that characters from 127 to 255 (inclusive) are by default not encoded in Unicode for backward compatibility reasons (but see L<encoding>). +If NUMBER is omitted, uses C<$_>. + For the reverse, use L</ord>. -See L<perlunicode> and L<encoding> for more about Unicode. -If NUMBER is omitted, uses C<$_>. +Note that under the C<bytes> pragma the NUMBER is masked to +the low eight bits. + +See L<perlunicode> and L<encoding> for more about Unicode. =item chroot FILENAME @@ -2428,11 +2432,15 @@ If EXPR is omitted, uses C<$_>. =item length -Returns the length in characters of the value of EXPR. If EXPR is +Returns the length in I<characters> of the value of EXPR. If EXPR is omitted, returns length of C<$_>. Note that this cannot be used on an entire array or hash to find out how many elements these have. For that, use C<scalar @array> and C<scalar keys %hash> respectively. +Note the I<characters>: if the EXPR is in Unicode, you will get the +number of characters, not the number of bytes. To get the length +in bytes, use C<do { use bytes; length(EXPR) }>, see L<bytes>. + =item link OLDFILE,NEWFILE Creates a new filename linked to the old filename. Returns true for @@ -4198,9 +4206,9 @@ last occurrence at or before that position. =item rmdir -Deletes the directory specified by FILENAME if that directory is empty. If it -succeeds it returns true, otherwise it returns false and sets C<$!> (errno). If -FILENAME is omitted, uses C<$_>. +Deletes the directory specified by FILENAME if that directory is +empty. If it succeeds it returns true, otherwise it returns false and +sets C<$!> (errno). If FILENAME is omitted, uses C<$_>. =item s/// |