Posts about Perl
Perl operator
May 13, 2021 17:00 0 Comment Perl
Perl operator, Perl operator, Arithmetic operator, Comparison operator, The assignment operator, Bit operation, The logical operator, Quotation marks, Other operators, Operator priority, Perl operator, An operator is a symbol that tells the compiler to perform a specific mathematical or logical operation, such as: 3 plus 2 plus 5., The
Perl conditional statement
May 13, 2021 17:00 0 Comment Perl
Perl conditional statement, Perl conditional statement, Thyme operator? :, Perl conditional statement, Perl conditional statements are blocks of code that are executed by the result of the execution of one or more statements
Perl sub-programs (functions)
May 13, 2021 17:00 0 Comment Perl
Perl sub-programs (functions), Perl sub-programs (functions), Pass parameters to sub-programs, Pass a hash to the child program, The child program returns a value, The private variable of the sub-program, The temporary assignment of the variable, Static variables, The sub-program calls the context, Perl sub-programs (functions), The Perl sub-program is also a user-defined function., A Perl sub-program is a separate piece of code that performs a s
Perl Socket programming
May 13, 2021 18:00 0 Comment Perl
Perl Socket programming, Perl Socket programming, The service-side socket function, The client function, The full instance, Perl Socket programming, Socket is also known as a socket, and applications typically make or respond to network requests through "sockets" that allow
Perl POD documentation
May 13, 2021 18:00 0 Comment Perl
Perl POD documentation, Perl POD documentation, What is a POD?, Perl POD documentation, POD documents can be embedded in modules or scripts in Perl., POD is a simple and easy-to-use markup language (labeling langua
Perl process management
May 13, 2021 18:00 0 Comment Perl
Perl process management, Perl process management, The back quote operator, System() function, Fork() function, Kill function, Perl process management, In Perl you can create processes in different ways., This tutorial discusses how to manage some processes., You can use the,
Perl packages and modules
May 13, 2021 18:00 0 Comment Perl
Perl packages and modules, Perl packages and modules, BEGIN and END modules, What is a Perl module?, Require and Use functions, Create a Perl module, Install the Perl module, Perl packages and modules, Each package in Perl has a separate symbol table that defines the syntax as:, package mypack;, This statement defines a pac
Perl CGI programming
May 13, 2021 18:00 0 Comment Perl
Perl CGI programming, Perl CGI programming, What is CGI, Web browsing, CGI architecture diagram, Web server support and configuration, HTTP head, CGI environment variables, File download, Use the GET method to transfer data, Use the POST method to pass data, Radio data is passed through the CGI program, Textarea data is passed through the CGI program, The pull-down data is passed through the CGI program, Cookies are used in CGI, Cookie settings, CGI module, Perl CGI programming, What is CGI, CGI is currently maintained by NCSA, which defines CGI as follows:, CGI (Common Gateway Interface), a common gatewa
Perl database connection
May 13, 2021 18:00 0 Comment Perl
Perl database connection, Perl database connection, DBI structure, The database connection, The insertion operation, The update operation, Delete the data, Use the do statement, COMMIT operation, ROLLBACK operation, Disconnect the database, Perl database connection, In this section, we'll show you the connection to the Perl database., In Perl 5, we can use the DBI module to connect to the
Perl is object-oriented
May 13, 2021 18:00 0 Comment Perl
Perl is object-oriented, Perl is object-oriented, Object-oriented basic concepts, The definition of the class, Create and use objects, Define the method, Inherited, Method override, Loaded by default, Destructors and garbage collection, Perl object-oriented instances, Perl is object-oriented, There are two different implementations of object-oriented programming in Perl:, One is based on an anonymous hash table, and
Perl sends a message
May 13, 2021 18:00 0 Comment Perl
Perl sends a message, Perl sends a message, Use the MIME:: Lite module, Perl sends a message, If your program is running on a Linux/Unix system, you can use the, sendmail tool to, send messages in Perl., Here's a simple ex
Perl regular expression
May 13, 2021 18:00 0 Comment Perl
Perl regular expression, Perl regular expression, Match the operator, Regular expression variables, Replace the operator, The conversion operator, More regular expression rules, Perl regular expression, Regular expressions describe a pattern of string matching that can be used to check whether a string contains some kind of su
Perl special variable
May 13, 2021 18:00 0 Comment Perl
Perl special variable, Perl special variable, Special variable type, Perl special variable, Some special variables are defined in the Perl language, usually with $, s, or % as prefixes, such as$., Many special variables
Perl UNLESS statement
May 13, 2021 19:00 0 Comment Perl
Perl UNLESS statement, Perl UNLESS statement, Perl UNLESS statement, Perl conditional statement, An unless statement consists of a Boolean expression followed by one or more statements., Grammar,