1IO::TieCombine(3)     User Contributed Perl Documentation    IO::TieCombine(3)
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3
4

NAME

6       IO::TieCombine - produce tied (and other) separate but combined
7       variables
8

VERSION

10       version 1.005
11

SYNOPSIS

13       First, we set up a bunch of access points:
14
15         my $hub = IO::TieCombine->new;
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17         my $str_ref  = $hub->scalar_ref('x');
18         my $fh       = $hub->fh('x');
19         my $callback = $hub->callback('x');
20
21         tie my $scalar, $hub, 'x';
22         tie local *STDOUT, $hub, 'x';
23
24         tie local *STDERR, $hub, 'err';
25
26       Then we write to things:
27
28         $$str_ref .= 'And ';
29         print $fh "now ";
30         $callback->('for ');
31         $scalar .= 'something ';
32         print "completely ";
33         warn "different.\n";
34
35       And then:
36
37         $hub->combined_contents;    # And now for something completely different.
38         $hub->slot_contents('x');   # And now for something completely
39         $hub->slot_contents('err'); # different.
40
41       ACHTUNG!!  Because of a serious problem with Perl 5.10.0, output sent
42       to a tied filehandle using "say" will not have the expected newline.
43       5.10.1 or later is needed.  Since 5.10.0 is broken in so many other
44       ways, you should really upgrade anyway.
45
46       ACHTUNG!!  Because of a different problem with Perls 5.10.1 - 5.16.3,
47       if you send output to a tied filehandle using "say", and "$\" is
48       undefined (which is the default), "$\" will not be restored to "undef"
49       after the "say"!  This means that once you've used "say" to print to
50       any tied filehandle, you have corrupted the global state of your
51       program.  Either start your program by setting "$\" to an empty string,
52       which should be safe, or upgrade to 5.18.0.
53

METHODS

55   new
56       The constructor takes no arguments.
57
58   combined_contents
59       This method returns the contents of all collected data.
60
61   slot_contents
62         my $str = $hub->slot_contents( $slot_name );
63
64       This method returns the contents of all collected data for the named
65       slot.
66
67   clear_slot
68         $hub->clear_slot( $slot_name );
69
70       This sets the slot back to an empty string.
71
72   fh
73         my $fh = $hub->fh( $slot_name );
74
75       This method returns a reference to a tied filehandle.  When printed to,
76       output is collected in the named slot.
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78   scalar_ref
79         my $str_ref = $hub->scalar_ref( $slot_name );
80
81       This method returns a reference to scalar.  When appended to, the new
82       content is collected in the named slot.  Attempting to alter the string
83       other than by adding new content to its end will result in an
84       exception.
85
86   callback
87         my $code = $hub->callback( $slot_name );
88

AUTHOR

90       Ricardo SIGNES <rjbs@cpan.org>
91

93       This software is copyright (c) 2015 by Ricardo SIGNES.
94
95       This is free software; you can redistribute it and/or modify it under
96       the same terms as the Perl 5 programming language system itself.
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100perl v5.30.0                      2019-07-26                 IO::TieCombine(3)
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