https://perl5.git.perl.org / perl5.git / blame
| Commit | Line | Data |
|---|---|---|
| e934609f | 1 | package PerlIO::scalar; |
| ec57fb93 | 2 | our $VERSION = '0.32'; |
| f6c77cf1 NIS |
3 | 1; |
| 4 | __END__ | |
| b3d30bf7 NIS |
5 | |
| 6 | =head1 NAME | |
| 7 | ||
| a920b0f7 | 8 | PerlIO::scalar - in-memory IO, scalar IO |
| b3d30bf7 NIS |
9 | |
| 10 | =head1 SYNOPSIS | |
| 11 | ||
| a920b0f7 JH |
12 | my $scalar = ''; |
| 13 | ... | |
| 14 | open my $fh, "<", \$scalar or die; | |
| 15 | open my $fh, ">", \$scalar or die; | |
| 16 | open my $fh, ">>", \$scalar or die; | |
| 8ec39683 RGS |
17 | |
| 18 | or | |
| 19 | ||
| a920b0f7 JH |
20 | my $scalar = ''; |
| 21 | ... | |
| 22 | open my $fh, "<:scalar", \$scalar or die; | |
| 23 | open my $fh, ">:scalar", \$scalar or die; | |
| 24 | open my $fh, ">>:scalar", \$scalar or die; | |
| b3d30bf7 NIS |
25 | |
| 26 | =head1 DESCRIPTION | |
| 27 | ||
| a920b0f7 JH |
28 | A filehandle is opened but the file operations are performed "in-memory" |
| 29 | on a scalar variable. All the normal file operations can be performed | |
| 30 | on the handle. The scalar is considered a stream of bytes. Currently | |
| 846c5ed3 | 31 | fileno($fh) returns -1. |
| b3d30bf7 | 32 | |
| 02e314e7 TC |
33 | Attempting to open a read-only scalar for writing will fail, and if |
| 34 | warnings are enabled, produce a warning. | |
| 35 | ||
| a920b0f7 | 36 | =head1 IMPLEMENTATION NOTE |
| b3d30bf7 | 37 | |
| ec57fb93 LT |
38 | C<PerlIO::scalar> only exists as a stub. One does not need to explicitly |
| 39 | C<use PerlIO::scalar>. | |
| b3d30bf7 | 40 | |
| a920b0f7 | 41 | =cut |