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Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P1

Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P1

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... in order. Now we can use another function called traverse(), which operates on this data structure and lets us specify what function to call for each piece of information it contains. Keeping ... module with Perl. You can get Tk from any CPAN archive (http://www.perl.com/CPAN/). The Tk extension provides an easy way to draw a window, put widgets into it (such as buttons, check boxes, ... a few examples of Tk-based web clients, which go beyond the command-line interface that we've been using so far in this book:[1]  xword, a dictionary client  track, a graphical version...
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Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P2

Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P2

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... "CHINA", "COLOMBIA", "CONGO", "COOK ISLANDS", "COSTA RICA", "COTE D'IVOIRE", "CROATIA", "CYPRUS", "CZECH ... REPUBLIC", "DENMARK", Chapter 7: Graphical Examples with Perl/Tk- P2 The do_search( ) function will take an optional $url argument, to give it an alternative place to connect ... clean up, and then we can do our lookup. If we care about this $tag, then we compress all spaces in the current text string (makes the display a little bit nicer) and call the function specified...
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Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P3

Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P3

Quản trị Web

... Package tracking client Chapter 7: Graphical Examples with Perl/Tk- P3 Our destinations list is an almost exact copy of the list you'd see on the web page. For ease in using, we placed ... 'top_left_arrow'); -yscrollcommand => ['set', $scroll], -exportselection => 0); $scroll->configure(-command => ['yview', $listbox]); $scroll->pack(-side => ... typed a letter, it would scroll to the first entry starting with that letter. Or you could put an additional entry, and search for any word starting with those characters: my $response_f =...
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Tài liệu modularizing programming with subprograms pdf

Tài liệu modularizing programming with subprograms pdf

Cơ sở dữ liệu

... Works” to the screen.a.Replace the skeleton text with text from LABS/p20proc.pls.b.Compile the code. Make appropriate corrections so code successfullycompiles. c. Execute the procedure at the ... functions. Youare already familiar with SQL functions. You call the function with actual parametersfrom within a SQL command, such as SELECT. Example Number FunctionsROUND (1896,2)TRUNC (1892,-2) ... SQL clauses.DThe select list of a SELECT commandDThe condition of a WHERE and HAVING clauseDThe CONNECT BY, START WITH, ORDER BY, and GROUP BY clausesDThe VALUES clause of the INSERT commandDThe...
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Tài liệu Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P4 docx

Tài liệu Web Client Programming with Perl-Chapter 7: Graphical Examples with Perl/Tk- P4 docx

Quản trị Web

... selected. my $site = ""; my ($content, @down); my @selected = $list->curselection; $mw->configure(-cursor => 'watch'); $mw->idletasks; foreach $index ... actually ping each site. The code to check a site's status is as follows, where $site is a string containing a standard URL (like http://www.ora.com): $content = head($site); if ($content) ... $history_label->configure(-background => $old_color); } } The function ping_site( ) is called when a new site is added to update its status. It is also called when in automode. It checks the...
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Tài liệu Network Programming with Perl pdf

Tài liệu Network Programming with Perl pdf

Quản trị mạng

... address with bindTell system to watch for incoming connections with listenWaits for a connection with accept or select☞ÄÄÄÄSlide 49 Comparing packed addresses (cont.)ExplanationThe structure ... the use of context here disturbs you then you canexplicitly call pack_sockaddr_in andunpack_sockaddr_in.☞☞☞☞Slide 8 The socket modelThe ServerCreates a generic socket with socketBinds ... Communication protocolsThere are two protocols that are mainly usedTCP is used with a stream socket to provide areliable, sequenced, flow-controlled channel ofcommunication.UDP is used with...
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Tài liệu MIPS Assembly Language Programming CS50 Discussion and Project Book Daniel J. Ellard September pdf

Tài liệu MIPS Assembly Language Programming CS50 Discussion and Project Book Daniel J. Ellard September pdf

Quản trị mạng

... representingcharacters by sequences of bits is to choose a number that corresponds to each char-acter. The most popular correspondence currently is the ASCII character set. ASCII,which stands ... American Standard Code for Information Interchange, uses 7-bitintegers to represent characters, using the correspondence shown in table 1.5.When the ASCII character set was chosen, some care ... The ASCII Character Set00 NUL 01 SOH 02 STX 03 ETX 04 EOT 05 ENQ 06 ACK 07 BEL08 BS 09 HT 0A NL 0B VT 0C NP 0D CR 0E SO 0F SI10 DLE 11 DC1 12 DC2 13 DC3 14 DC4 15 NAK 16 SYN 17 ETB18 CAN 19...
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Tài liệu Advanced Linux Programming: 1-Advanced UNIX Programming with Linux pdf

Tài liệu Advanced Linux Programming: 1-Advanced UNIX Programming with Linux pdf

Hệ điều hành

... Makefile contains:reciprocal: main.o reciprocal.og++ $(CFLAGS) -o reciprocal main.o reciprocal.omain.o: main .c reciprocal.hppgcc $(CFLAGS) -c main .c reciprocal.o: reciprocal.cpp reciprocal.hppg++ ... (“The reciprocal of %d is %g\n”, i, reciprocal (i));return 0;}Listing 1.2 (reciprocal.cpp) C+ + source file—reciprocal.cpp#include <cassert>#include “reciprocal.hpp”double reciprocal (int ... source code into machine-readable object code thatcan actually run.The compilers of choice on Linux systems are all part of the GNUCompiler Collection, usually known as GCC.3GCC also include...
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Tài liệu Báo cáo khoa học:

Tài liệu Báo cáo khoa học: "Learning Parse and Translation Decisions From Examples With Rich Context" pdf

Báo cáo khoa học

... additional background knowledge such as 1. A knowledge base (KB), which currently con- sists of a directed acyclic graph of 4356 mostly semantic and syntactic concepts connected by 4518 ... http://www.logos-ca.com/ Oct. 1996. SYSTRAN. http://systranmt.com/ Oct. 1996. 489 Features 6 ' 25 50 100 205 Prec. Recall L. pr. L. rec. Tagging Cr/snt 0 cr <lcr <2cr < 3cr < 4cr ... phrases. Core slots of frames are surface and lexi- cal form, syntactic and semantic category, subframes with syntactic and semantic roles, and form restric- 1The lexicon provides part-of-speech...
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Báo cáo khoa học:

Báo cáo khoa học: "Efficient Parsing with Linear Context-Free Rewriting Systems" pdf

Báo cáo khoa học

... sentences of any length, with favorableaccuracies. The availability of this technique maylead to a wider acceptance of LCFRS as a syntacticbackbone in computational linguistics.AcknowledgmentsI ... 25cpu time (s)Sentence lengthPLCFRSCFG-CTF (Split-PCFG ⇒ PLCFRS)Figure 8: Efficiency of parsing PLCFRS with and with- out coarse-to-fine. The latter includes time for bothcoarse & fine grammar. ... tree local-mctag induced depen-dency structures. In Proceedings of TAG+. URLhttp://www.research.att.com/∼srini/TAG+10/papers/chenmainjoshi .pdf. Michael Collins. 1999. Head-driven statisticalmodels...
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C++?? A Critique of C++ and Programming and Language pot

C++?? A Critique of C++ and Programming and Language pot

Kỹ thuật lập trình

... match up an object creation with theconstructor actually called. Fourthly, the compilercould check the arguments given in the invocationto the constructor signature.Java’s constructor scheme ... thatfunctional access and C functions are differentthings. Functional access hides the accessmechanism. C functions, however, make the accessmechanism visible: you know you are invoking apiece of code ... many suchaccesses occur, the advantage of concurrency is lost.This is because updates to a global environment areside effects. Programming in such an environmentrequires complex locking mechanisms...
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Introduction to Programming with Fortran pdf

Introduction to Programming with Fortran pdf

Kỹ thuật lập trình

... It is much criticised because it lacks features that encourage or force the adoption of sound programming techniques. 3.9.6 C There is a requirement in computing to be able to access the ... Generic Programming 33124.1 Introduction 33124.2 Generic Programming and Other Languages 33124.3 Generic Example 33224.3.1 Generic Quicksort in C+ + 33924.3.2 Generic Quicksort in C# 34024.3.3 ... logically—so called data structuring, and we will look at two of these in the cover-age below C and Pascal. C provided this facility via structs and Pascal did it via records. These languages...
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