=item *
-EPOC is is now supported (on Psion 5).
+EPOC is now supported (on Psion 5).
=item *
For example, whenever you call Perl's built-in C<caller> function
from the package DB, the arguments that the corresponding stack
-frame was called with are copied to the the @DB::args array. The
+frame was called with are copied to the @DB::args array. The
general mechanisms is enabled by calling Perl with the B<-d> switch, the
following additional features are enabled (cf. L<perlvar/$^P>):
C<DB::parse_options(string)>. The function C<DB::dump_trace(skip[,
count])> skips the specified number of frames and returns a list
containing information about the calling frames (all of them, if
-C<count> is missing). Each entry is reference to a a hash with
+C<count> is missing). Each entry is reference to a hash with
keys C<context> (either C<.>, C<$>, or C<@>), C<sub> (subroutine
name, or info about C<eval>), C<args> (C<undef> or a reference to
an array), C<file>, and C<line>.
You should think long and hard about why you need everything loaded
at once. It's just not a scalable solution. You might also find it
-more fun to use the the standard DB_File module's $DB_RECNO bindings,
+more fun to use the standard DB_File module's $DB_RECNO bindings,
which allow you to tie an array to a file so that accessing an element
the array actually accesses the corresponding line in the file.
On some platforms such as Windows where the fork() system call is not
available, Perl can be built to emulate fork() at the interpreter level.
While the emulation is designed to be as compatible as possible with the
-real fork() at the the level of the Perl program, there are certain
+real fork() at the level of the Perl program, there are certain
important differences that stem from the fact that all the pseudo child
"processes" created this way live in the same real process as far as the
operating system is concerned.
the real name of the user (as opposed to the login name) and other
information pertaining to the user. Beware, however, that in many
system users are able to change this information and therefore it
-cannot be trusted and therefore the $gcos is is tainted (see
+cannot be trusted and therefore the $gcos is tainted (see
L<perlsec>). The $passwd and $shell, user's encrypted password and
login shell, are also tainted, because of the same reason.
open(FOO, "< $file\0");
(this may not work on some bizzare filesystems). One should
-conscientiously choose between the the I<magic> and 3-arguments form
+conscientiously choose between the I<magic> and 3-arguments form
of open():
open IN, $ARGV[0];
semid_ds structure or semaphore value array. Returns like C<ioctl>:
the undefined value for error, "C<0 but true>" for zero, or the actual
return value otherwise. The ARG must consist of a vector of native
-short integers, which may
may be created with C<pack("s!",(0)x$nsem)>.
+short integers, which may be created with C<pack("s!",(0)x$nsem)>.
See also C<IPC::SysV> and C<IPC::Semaphore> documentation.
=item semget KEY,NSEMS,FLAGS
IO::Socket module provides an object-oriented approach. IO::Socket is
included as part of the standard Perl distribution as of the 5.004
release. If you're running an earlier version of Perl, just fetch
-IO::Socket from CPAN, where you'll also find find modules providing easy
+IO::Socket from CPAN, where you'll also find modules providing easy
interfaces to the following systems: DNS, FTP, Ident (RFC 931), NIS and
NISPlus, NNTP, Ping, POP3, SMTP, SNMP, SSLeay, Telnet, and Time--just
to name a few.
The pragma works just like the existing "strict" pragma.
This means that the scope of the warning pragma is limited to the
-enclosing block. It also means that that the pragma setting will not
+enclosing block. It also means that the pragma setting will not
leak across files (via C<use>, C<require> or C<do>). This allows
authors to independently define the degree of warning checks that will
be applied to their module.
=back
-The combined effect of 3 & 4 is that it will will allow code which uses
+The combined effect of 3 & 4 is that it will allow code which uses
the C<warnings> pragma to control the warning behavior of $^W-type
code (using a C<local $^W=0>) if it really wants to, but not vice-versa.
other locale variables) may affect other programs as well, not just
Perl. In particular, external programs run from within Perl will see
these changes. If you make the new settings permanent (read on), all
-programs you run see the changes. See L<ENVIRONMENT> for for
+programs you run see the changes. See L<ENVIRONMENT> for
the full list of relevant environment variables and L<USING LOCALES>
for their effects in Perl. Effects in other programs are
easily deducible. For example, the variable LC_COLLATE may well affect
Extension modules are written in C (or a mix of Perl and C). They
are usually dynamically loaded into Perl if and when you need them,
-but may also be be linked in statically. Supported extension modules
+but may also be linked in statically. Supported extension modules
include Socket, Fcntl, and POSIX.
Many popular C extension modules do not come bundled (at least, not
is no practical limit for the exponent or number of decimal digits for these
numbers. (But realize that what we are discussing the rules for just the
I<storage> of these numbers. The fact that you can store such "large" numbers
-does not mean that that the I<operations> over these numbers will use all
+does not mean that the I<operations> over these numbers will use all
of the significant digits.
See L<"Numeric operators and numeric conversions"> for details.)
C<O_NOCTTY>, C<O_NDELAY> and C<O_LARGEFILE>. Consult your open(2)
manpage or its local equivalent for details. (Note: starting from
Perl release 5.6 the O_LARGEFILE flag, if available, is automatically
-added to the sysopen() flags because large files are the the default.)
+added to the sysopen() flags because large files are the default.)
Here's how to use C<sysopen> to emulate the simple C<open> calls we had
before. We'll omit the C<|| die $!> checks for clarity, but make sure
=head2 autocroak?
-This is the Fatal.pm module, so any builtin that that does
+This is the Fatal.pm module, so any builtin that does
not return success automatically die()s. If you're feeling brave, tie
this in with the unified exceptions scheme.
we have much better approaches, like nested hashes or hashes of arrays.
But there's nothing wrong with using symbolic references to manipulate
something that is meaningful only from the perspective of the package
-symbol symbol table, like method names or package variables. In other
+symbol table, like method names or package variables. In other
words, when you want to refer to the symbol table, use symbol references.
Clustering all the class attributes in one place has several advantages.
https://perl5.git.perl.org / perl5.git / commitdiff