1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
.\" -*- mode: troff; coding: utf-8 -*-
.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
.ie n \{\
. ds C` ""
. ds C' ""
'br\}
.el\{\
. ds C`
. ds C'
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el .ds Aq '
.\"
.\" If the F register is >0, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD. Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{\
. if \nF \{\
. de IX
. tm Index:\\$1\t\\n%\t"\\$2"
..
. if !\nF==2 \{\
. nr % 0
. nr F 2
. \}
. \}
.\}
.rr rF
.\" ========================================================================
.\"
.IX Title "DirHandle 3perl"
.TH DirHandle 3perl 2024-02-11 "perl v5.38.2" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH NAME
DirHandle \- (obsolete) supply object methods for directory handles
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 6
\& # recommended approach since Perl 5.6: do not use DirHandle
\& if (opendir my $d, \*(Aq.\*(Aq) {
\& while (readdir $d) { something($_); }
\& rewind $d;
\& while (readdir $d) { something_else($_); }
\& }
\&
\& # how you would use this module if you were going to
\& use DirHandle;
\& if (my $d = DirHandle\->new(".")) {
\& while (defined($_ = $d\->read)) { something($_); }
\& $d\->rewind;
\& while (defined($_ = $d\->read)) { something_else($_); }
\& }
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
\&\fBThere is no reason to use this module nowadays.\fR
.PP
The \f(CW\*(C`DirHandle\*(C'\fR method provide an alternative interface to the
\&\fBopendir()\fR, \fBclosedir()\fR, \fBreaddir()\fR, and \fBrewinddir()\fR functions.
.PP
Up to Perl 5.5, \fBopendir()\fR could not autovivify a directory handle from
\&\f(CW\*(C`undef\*(C'\fR, so using a lexical handle required using a function from Symbol
to create an anonymous glob, which took a separate step.
\&\f(CW\*(C`DirHandle\*(C'\fR encapsulates this, which allowed cleaner code than \fBopendir()\fR.
Since Perl 5.6, \fBopendir()\fR alone has been all you need for lexical handles.
|
