Perl

First, the preface Recently wrote a program to download the attachments from Gmail in bulk, using Mail::P op3client and MIME::P arser 2 Modules Second, related documents Cpan:Mail::P op3client ModuleMIME::P arser Moduleinstallation, uninstall and

By default, it is clear that the rows are distinguished by \ n, which we also call as line breaks. When reading a sequence, when read by row, the line break is the standard. The contents of the read STRAWBERRY1.GB file are as follows: Locus JX118024

The <> operators in Perl can be used for the following purposes: 1 if the middle of the angle bracket is a file handle, the angle bracket operator allows you to read the file handle, such as .2 If the middle of the angle bracket is a search pattern,

Our usage in PerlRequire 5.006When the version number is less than 5.006, the failure is returned, causing the module to fail to load.So its role is to ensure that the module invokes the Perl version of the environment. Our, like my, are

Copy Code code as follows: My $ip = "192.168.0.1|192.168.0.2|192.168.0.1"; if ($ip =~/ ^ (?: ((?:\ D{1,3}\.) {3}\d{1,3}) (?= (?: \| (?! \1) (? 1) )* \z ) \| )* (? 1) $ /x) { print "match\n"; }

Packge Mule; Use Base ("Horse", "donkey"); # Declare a superclass it is the abbreviation for the following: package Mule; BEGIN {Our @ISA = ("Horse", "donkey"); require Horse; require donkey;} Horse class: [root@wx03 test]# cat horse.pm package

1.undef UNDEF is the default value when variables are not initialized in Perl. When this uninitialized variable is used as an integer, then undef is 0, and when the variable is used as a string, then Undef is an empty string. So when you use a

When I run a Perl script in centos6.6, the "Server Version unavailable ... line 545" issue appears,This is due to the inability to verify the server's SSL certificate.Set the following environment variables to solve the problem:Export

There is no bool type in PerlThere is no bool type in Perl, and all judgments are made by numeric types and string types.What type is FalseThere are only three scalars, the number 0, the empty string "", and the string ' 0 ' ("0").The vector has an

1 #!/usr/bin/env Perl2 Usewarnings;3 UseStrict;4 Use Socket;5 6 my $HOST='localhost';7 my $PORT=8080;8 Socket(S,pf_inet,sock_stream,Getprotobyname("TCP"));9 if(Connect(S,sockaddr_in ($PORT, Inet_aton ($HOST)))){Ten Open(STDIN,">&s"); One

Implemented features:Fetch warn and its description and NUM numberFeatures not implemented:How to prioritize these warn to facilitate later report analysis usingIdea:1. Find a way to permanently save and read warn Level/advice data at the fastest

In BI report development, often need to calculate the year-end, need to use the month-end date, with the date function of the database system needs to be in each place to use the date to write the function, in some special cases, the function will

The    scripting language uses an interpreter to execute script code. For most divisions languages, the interpreter can be run interactively. Simple example://This example demonstrates the use of the scripting language Python, after the script

-- Start Perl is a very loose language. By default, we use an undefined variable or perform mathematical operations on a string and a number. It does not report any errors, so when we write a Perl script, we 'd better use one of the following

Original article link References CPAN mirror Configuration CPAN tutorial Perl 5 tutorial   Perl has added the concept of modules to the fifth edition to provide Object-Oriented Programming capabilities. This is the history of

A Perl script was written a few days ago :? Operator encountered a very strange problem $ Data-> {$ id}-> {'Total '}?$ Data-> {$ id}-> {'ratio '} = sprintf ("%. 2f % ", 100 * $ data-> {$ id}-> {'succ'}/$ data-> {$ id}-> {'Total '}):$ Data-> {$ id}->

I. Concept of reference: Perl provides a data type similar to the pointer function in C/C ++, called reference. This reference is different from the reference concept in C ++, but the effect is the same; references in Perl are pointers used to trace

1. Install Perl-LDAP: Http://search.cpan.org /~ Gbarr/perl-ldap/The premise is that you have installed the Perl toolkit. First, check the Perl version.[Root @ local ~] Perl-VBuilt under LinuxCompiled at Nov 8 2007 06:49:06@ INC:/Usr/lib64/perl5/site_

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,

The company's billing is not based on access logs. However, the original access logs are the most trusted resources, It is often used to test various parameters, such as traffic. Log format: 222.85.90.158--[01/SEP/2012: 00: 00: 00 +