perl the complete reference second edition phần 1 docx

... . . 10 16 Contents xxvii xxxvi Perl: The Complete Reference What’s Changed Since the First Edition? Beyond the obvious updates and fixes for the newer versions of Perl, we’ve also changed the ... advantages: Because there is no compilation process, the development of interpreted code should 8 Perl: The Complete Reference Introduction xxxix profile of your script, a...

Ngày tải lên: 13/08/2014, 22:21

... 10 8 Perl: The Complete Reference $^T $BASETIME The time at which the script started running, defined as the number of seconds since the epoch. $^V $PERL_ VERSION The current revision, ... as a method 10 4 Perl: The Complete Reference $$ $PID $PROCESS_ID The process number of the Perl interpreter executing the current script. $< $UID $REAL_USER_ID The r...

Ngày tải lên: 13/08/2014, 22:21

... $print ? 1 : 0; vec($optstring, 1, 1) = $display ? 1 : 0; vec($optstring, 2, 1) = $delete ? 1 : 0; print length($optstring),"\n"; The print statement at the end of the code displays the ... on the left based on the regular expression on the right. The second operator, !~, is for matches only and is the exact opposite: it returns true only if the value...

Ngày tải lên: 13/08/2014, 22:21

... problems. 352 Perl: The Complete Reference Chapter 12 : Networking 3 71 PROGRAMMING WITH PERL These are exported from the Socket module only on request, either individually or with the :crlf export ... seconds to the current time and drop out of the loop when that value is reached. If the calculation is made at the end of the second, the actual time could be anythi...

Ngày tải lên: 13/08/2014, 22:21

... I suggest you refer to the man pages for more information on these functions. 478 Perl: The Complete Reference 482 Perl: The Complete Reference -c Checks the syntax of the script without executing ... whether this is the case. A value of define indicates that Perl s malloc() is being used. PERL_ DESTRUCT_LEVEL Controls the destruction of global objects and other refe...

Ngày tải lên: 13/08/2014, 22:21

... using the normal redirection operators within the shell; for example: $ roman.cgi 2>roman.err 606 Perl: The Complete Reference 592 Perl: The Complete Reference Other fields in Table 18 -2 are ... execution of the script. You can change this behavior, marking the options as “FATAL” when importing the pragma module: use warnings FATAL => qw/syntax/; 618 Perl: T...

Ngày tải lên: 13/08/2014, 22:21

... 'us,ue,md,me' signalLevel = &apos ;1& apos; warnLevel = &apos ;1& apos; dieLevel = &apos ;1& apos; inhibit_exit = &apos ;1& apos; 742 Perl: The Complete Reference The basic features of the ActivePerl debugger are essentially ... shown in Table 21- 1. For others, refer to the perldebug man page. 740 Perl: The Complete Reference Option Description RecallCommand Th...

Ngày tải lên: 13/08/2014, 22:21

... compiling the perlmain.c file. The default is to use the value of $(CC). PERL_ ARCHLIB A string defining the libraries to be used for building the Perl binary. PERL_ LIB A string specifying the directory ... does). PERL A string containing the location of a Perl binary capable of doing the tasks normally executed by the miniperl binary created during a Perl build....

Ngày tải lên: 13/08/2014, 22:21

... constructs in the Perl code. It is used as a backend to the Perl compiler. $ perl -MO=Lint foobar.pl References See O; Chapter 22 B::Showlex A Perl compiler backend, used with the O module. The module ... systems. 960 Perl: The Complete Reference TEAMFLY Team-Fly ®...

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... substituting underscores 11 02 Perl: The Complete Reference 11 24 Perl: The Complete Reference addhistory(EXPR) adds EXPR to the history of input lines. IN OUT returns the filehandles for input ... to the Perl function. Table B -14 . Functions in the POSIX Module (continued) 11 18 Perl: The Complete Reference Symbol This module provides a set of functions for...

Ngày tải lên: 13/08/2014, 22:21