=over =item listen SOCKET,QUEUESIZE X<listen> Does the same thing that the L<listen(2)> system call does. Returns true if it succeeded, false otherwise. See the example in L<perlipc/"Sockets: Clien...

=head1 NAME perldiag - various Perl diagnostics =head1 DESCRIPTION These messages are classified as follows (listed in increasing order of desperation): (W) A warning (optional). (D) A deprecation ...

=over =item and =item cmp =item eq =item ge =item gt =item isa =item le =item lt =item ne =item not =item or =item x =item xor These operators are documented in L<perlop>. =back

=over =item else =item elsif =item for =item foreach =item if =item unless =item until =item while These flow-control keywords are documented in L<perlsyn/"Compound Statements">. =back

=over =item getpwnam NAME X<getpwnam> X<getgrnam> X<gethostbyname> X<getnetbyname> X<getprotobyname> X<getpwuid> X<getgrgid> X<getservbyname> X<gethostbyaddr> X<getnetbyaddr> X<getprotobynumber> X<...

=over =item try =item catch =item finally These flow-control keywords related to the experimental C<try> feature are documented in L<perlsyn/"Try Catch Exception Handling">. =back

=over =item $PREMATCH =item $` X<$`> X<$PREMATCH> The string preceding whatever was matched by the last successful pattern match. (See L</Scoping Rules of Regex Variables>). See L</Performance issu...

=over =item rindex STR,SUBSTR,POSITION X<rindex> =item rindex STR,SUBSTR Works just like L<C<index>|/index STR,SUBSTR,POSITION> except that it returns the position of the I<last> occurrence of SUBS...

=over =item getpwnam NAME X<getpwnam> X<getgrnam> X<gethostbyname> X<getnetbyname> X<getprotobyname> X<getpwuid> X<getgrgid> X<getservbyname> X<gethostbyaddr> X<getnetbyaddr> X<getprotobynumber> X<...

=over =item glob EXPR X<glob> X<wildcard> X<filename, expansion> X<expand> =item glob In list context, returns a (possibly empty) list of filename expansions on the value of EXPR such as the Unix s...