eclipse perl

Author: mellonfire2006-05-12 10:10:26 You may already know that there are many existing Perl modules on the Perl integrated collection network (Comprehensive Perl archive network, CPAN), allowing developers to efficiently complete common tasks. In particular, CPAN provides resources for ne

One of the coolest modules in Perl is the Perl database interface (DBI ). By providing a series of internal functions that can be converted into original call functions, the DBI module provides a unified interface for many different databases. With Perl, you can easily use databases and create dynamic web pages.Currently, MySQL is a database widely used for Web w

1.Perl Array (1): 1 Initialize the array @array = ("Stringa", "StringB", "STRINGC");(2) using negative index loop to retrieve print $array [-1]; #输出索引为 (-1 + 3)% 3 = 2 STRINGC3 Dynamic growth $array [4] = "STRINGD"; #虽然 $array [3] has not yet been used, but in the use of dynamically assigned $array[4], has been left vacant for $array[3]4 dynamic growth after the negative index print $array [-1]; #输出索引为 (-1 + 5)% 5 = 4 Stringd5 print @array; #输出数组中所有值

Thread: A scan that uses multithreading to handle large amounts of data and encounters a possible deadlock in read-write files. The life cycle of a Perl thread1. Use the Create () method of the Threads package: Use threads; Sub Say_hello { printf ("Hello thread! @_.\n "); Return (rand (10)); } my $t 1 = threads->create (\say_hello, "param1", "param2"); My $t 2 = threads->create ("Say_hello", "param3", "param4"); My $t 3 = threads->create

One, SystemPerl can also invoke the Shell's command with system, which, like Awk's system, returns a value that is also the exit state of the command it invokes. Copy Code code as follows: [Root@ax3sp2 ~]# Cat aa.pl #! /usr/bin/perl-w $file = "wt.pl"; System ("Ls-l wt.pl"); $result = System "Ls-l $file"; print "$result \ n"; #输出命令的退出状态 System "Date"; [Root@ax3sp2 ~]# Perl aa

1. Starting from the basics Unlike Java,perl, you do not need the "main" method as the entry point. To run a simple Perl program is as follows: Copy Code code as follows: # comment starts with "#" # The name is hello.pl Print "Hello perl!"; Just perform: Perl hello.pl 2. Date Type The

Install perl in linux-general Linux technology-Linux programming and kernel information. For details, refer to the following section. Both linux and perl are free software. It is amazing to combine them. Follow these steps to install perl in linux. 1. Get the latest perl version. The current version is 5.6.0, that is,

Alex Suykov had do some work for this purpose, and my compile script was based on her patch.Stepsstep 1:Download Perl source code from Perl ' s official site, such as: wget http://www.cpan.org/src/5.0/perl-5.20.2.tar.gz Step 2:Download the corresponding Perl cross compile patch from Alex Suykov ' s site.

Perl Unicode conversion Overview: 1. Determine the encoding method of the Input Source2. The input source is UTF-8 encoded.A. encode: _ utf8_on ($ Str); Enable utf8 flag.The input source is not UTF-8 encoded.A. $ string = decode (encoding, $ octets [, check]); convert the input source to utf8 encoding and enable utf8 flag3. Output$ STR = encode: encoding (encoding, $ Str); encodes a string from utf8 to the specified encoding, and disables utf8 flag.

Perl, as a scripting language, can generate and execute code in real time. This feature can defer the compilation of code to the runtime, so it is called "Dynamic Code". In addition, Perl also provides exception handling mechanisms like Java and C + +. This article will explore the functions of implementing dynamic Code and exception handling mechanism in Perl: e

This task counts the top 500 entries in a week. Data source: from the Oracle database. Requirement: generate an Excel file and send an email to the relevant person. Because it was the first time that I was engaged in such a task (writing scripts on the server and processing data), I encountered many problems and learned a lot about it, including using shell scripts, related Linux commands, shell scripts to send emails, Perl scripts to use,

I have created a freeswitch kernel research and exchange group, 45211986. welcome to join us. In addition, we provide the SIP-based communication server and client solution to develop the SIP/IMS video client, supports access to the SIP Softswitch, IMS core network, voice, video, and instant communication functions, and video formats such as h263, h264, and MPEG4Soft encoding soft decoding: provides hardware codec interface connection, and provides servers. If you are interested, contact me. Fr

Perl ref Functions We all know that Perl has a reference concept: a group of data is actually a reference of another group of data. These references are called pointers. The first group of data stores the header address of the second group of data. For details about this part, refer to [original] learning notes for the Perl 24-hour Tutorial: reference and struct

From: http://blog.chinaunix.net/u/9861/showart_727153.html Usage of Perl function Splice: Splice has four usage options: 1. splicearray, offset, length, list 2. splicearray, offset, Length 3. splicearray, offset 4. splicearray Description: removes the elements specified by offset and length in the array, and replaces the elements in the list. In the context of the list, the function returns the overflow array element. In the scalar context, return th

Add the methods summarized yesterday to query which Perl modules have been installed locally. You can use either of the following methods: Run the following statement in shell: $ Perl-msmart: comments-El If an error similar to the following is prompted, can't locate smart/comments. pm IN @ INC (@ INC contains: C:/strawberry/perl/lib C:/strawberry/

expressions implement the same function. On the left is the @ A operation on the array, and on the right is the operation on the array pointed to by 'quot' $ Aref. They have the same effect on arrays. The 'quota' of the hash is exactly the same as the 'quota' of the array. % H % {$ href} a hashKeys % H keys % {$ href} get the key from the hash$ H {'red'} $ {$ href} {'red'} is a member in the hash.$ H {'red'} = 17 $ {$ href} {'red'} = 17 assign values to a memberNo matter what you want to do wit

1. Length of the array: If you assign an array variable to a scalar variable, the length of the array is assigned to the scalar variable: $ A = @ array; # The length of the array @ array is stored in the scalar variable $ A, that is, the number of elements in the array; ($ A, $ B, $ c) = (, 3); # assign 1 to $ A, assign 2 to $ B, and assign 3 to $ C; The index of the subscript of the last element in the array is determined by the special variable $ # arrayname of the array. It is represented by

Perl contains some predefined file handles. For example, standard input stdin and standard outputStdout, And standard errorsStderr. The standard error stderr is an additional output path. How can we understand this sentence? Let's look at an example. %Perl-E 'print "Hello, world! \ Nabc "; print stderr" Hi \ n ";' Output: Hello, world! Hiabc Instead: Hello, world! Abchi This is because the

Special symbols of Perl @ Array$ X {} x is preceded by the dollar sign ($), followed by curly braces ({}), and is a hash element.% To reference the entire hash, use the percent sign (") as the prefix. The hash name used in the previous pages is % family_name.$! Some readable information generated by the system may also be error information$ _ Subfunction Parameter Variable itself@ _ Private variable of subroutine X call sub-function x Default internal

Perl was first designed by Larry Wall), which was published in December 18, 1987. Perl uses the features of C, sed, awk, shell scripting, and many other programming languages. The most important feature is that it integrates the Regular Expression Function and a huge third-party code library CPAN. Many recruitment requirements are familiar with one of Perl Python