chapter 28  the standard perl library

Ngày tải lên: 18/10/2013, 17:15

... The socket library is part of the standard Perl distribution Include the socket module like this: use Socket; Table 4-1 lists the socket calls available using the socket library in Perl Table ... of imagination), and required it along with the socket library itself: #!/usr/local/bin /perl use Socket; require "tcp.pl"; Once the socket library and open_TCP( ) routine are included, the example ... filehandle is FH For example: print FH "HTTP/1.0 404 Not Found\n"; Client Connection Code The following Perl function encapsulates all the necessary code needed to establish a network connection to a...

Ngày tải lên: 20/10/2013, 10:15

... # fetch images and hyperlinks into arrays, print them out if (defined $images || $all) { @links=grab_urls($data, ('img', 'src', 'body', 'background')); } if (defined $hyperlinks || $all) { @links2= ... only, and -l for displaying only hyperlinks So, to see just the image references at www.ora.com, one would this: % hgrepurl -i http://www.ora.com Or just the hyperlinks at www.ora.com: % hgrepurl ... http://www.ora.com Or both images and hyperlinks at www.ora.com: % hgrepurl http://www.ora.com The complete source code looks like this: #!/usr/local/bin /perl -w # socket based hypertext grep URLs...

Ngày tải lên: 20/10/2013, 10:15

... command line and prints it to standard output: #!/bin /perl use LWP::Simple; print (get $ARGV[0]); The first line, starting with #!, is the standard line that calls the Perl interpreter If you want ... classes To expand each hyperlink, we first define each hyperlink in terms of the URL class: $url = new URI::URL $link; Then we use a method in the URL class to expand the hyperlink's URL, with respect ... the hyperlink that appears after the HREF or SRC parameter LWP simplifies this process down to two function calls Let's take the geturl program from before and modify it: #!/usr/local/bin/perl...

Ngày tải lên: 24/10/2013, 08:15

... hyperlinks as a reference to an array, where each element in the array is another array The second array contains the hyperlink text and a reference to the HTML::Element that specifies the hyperlink ... Robot Exclusion Standard Support Let's one more example This time, let's add support for the Robot Exclusion Standard As discussed in the LWP::RobotUA section, the Robot Exclusion Standard gives ... of Perl or LWP may handle this automatically See online documentation at www .perl. com for up-to-date information Or a subclass of HTML::Parser, which HTML::TreeBuilder happens to be A4 is the standard...

Ngày tải lên: 24/10/2013, 08:15

... an Apache configuration file: PerlSetVar MasonAllowGlobals $dbh PerlAddVar MasonAllowGlobals %session The allow_globals parameter can be used effectively with the Perl local() function in an autohandler ... used inside the site's Mason components PerlSetVar MasonInPackage My::Application { package My::Application; use Apache::Constants qw(:common); } < /Perl> • comp_class By default, components ... enforce good programming practice • in_package The code written in < %perl> sections (or other component sections that contain Perl code) must be compiled in the context of some package, and the...

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Ngày tải lên: 01/07/2014, 14:20

... can wait at table, sweep rooms, brush clothes, clean boots, handle a knife, fork, and spoon properly, and even drink wine, doing everything as well as the best servant that ever walked upon...

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Ngày tải lên: 05/07/2014, 18:20

... broader unified framework of economics Roger Garrison began to present the Austrian cycle within a standard model for a comparative analysis in the 1970s Garrison’s work culminated in his Time and ... economies in the late 1980s was the most significant political economy event since the Great Depression Standard models of 452 P J BOETTKE AND P T LEESON optimal planning and the macroeconomic examination ... silenced within the profession “Although women and minorities commonly experience dissonance with the standard models of economics, only those who adhere to foundational metaphors are allowed to participate...

Ngày tải lên: 06/07/2014, 02:21

Ngày tải lên: 06/07/2014, 09:20

... iterators, & functors – http://www.cs.rpi.edu/ musser/stl.html • Stepanov & Lee, “The Standard Template Library – http://www.cs.rpi.edu/ musser/doc.ps • STL is flexible, according to open/closed ... Algorithms operate over iterators rather than containers • Since a C++ iterator provides a familiar, standard interface, at some point you will want to add one to your own classes so you can “plug-&and-play ... • An input iterator must allow the following operations // Fill a vector with values read from standard input std::vector v; for (istream_iterator i = cin; i != istream_iterator...

Ngày tải lên: 30/10/2015, 18:04

... Chapter 18 Standard Template Library Copyright © 2007 Pearson Education, Inc Publishing as Pearson Addison-Wesley Overview ... utility header file You may wish to read about the multiset and multimap See Josuttis, The C++ Standard Library Addison Wesley Copyright © 2007 Pearson Education, Inc Publishing as Pearson Addison-Wesley...

Ngày tải lên: 12/09/2012, 22:55