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Getting started with the Perl language

May 13, 2021 16:00 0 Comment Perl

Getting started with the Perl language, Getting started with the Perl language, Who is fit to read this tutorial?, You need to know before you take this tutorial, The first Perl program, Instance, Getting started with the Perl language, Perl is an abbreviation for Practical Extraction and Report Language and translates as a "practical report ext

Introduction to Perl

May 13, 2021 16:00 0 Comment Perl

Introduction to Perl, Introduction to Perl, What is Perl?, Perl benefits, Perl disadvantages, Introduction to Perl, Perl, a feature-rich computer programming language that runs on more than 100 computer platforms, is suitable for everything fro

Perl environment installation

May 13, 2021 16:00 0 Comment Perl

Install Perl, Install Perl, Run Perl, Before we can start learning the Perl language, we need to install Perl's execution environment., Perl can be run on the following platforms:, Unix (S

Perl basic syntax

May 13, 2021 16:00 0 Comment Perl

Perl basic syntax, Perl basic syntax, The first perl program, The script file, Comments, White space in Perl, Single and double quotes, Here document, Escape characters, Perl identifier, Perl basic syntax, Perl borrows the features of C, sed, awk, shell scripts, and many other programming languages, and the syntax is somewhat similar t

Perl data type

May 13, 2021 16:00 0 Comment Perl

Perl data type, Perl data type, Digital literal, Perl data type, Perl is a weak type language, so variables do not need to specify a type, and the Perl interpreter automatically selects matching type

Perl variable

May 13, 2021 16:00 0 Comment Perl

Perl variable, Perl variable, Create a variable, The standard variable, Array variables, Hash variable, The variable context, Perl variable, A variable is data stored in memory, and creating a variable opens up a space in memory., The interpreter determines its storage space

Perl standard

May 13, 2021 16:00 0 Comment Perl

Perl standard, Perl standard, The digital mark-up, String calibration, The standard operation, A multi-line string, Special characters, v string, Perl standard, The calibration is a simple unit of data., The calibration can be an integer, floating point, character, string, paragraph, or a comple

Perl array

May 13, 2021 16:00 0 Comment Perl

Perl array, Perl array, Create an array, Access array elements, Array serial number, The size of the array, Add and remove array elements, Cut the array, Replaces array elements, Convert the string to an array, Convert the array to a string, Array sorting, Special variable: $ . . ., Merge the array, Select the element from the list, Perl array, Array One is a sequenceless table variable that stores the scale value., Array variables begin with ., The access array elements are read,

Perl hash

May 13, 2021 16:00 0 Comment Perl

Perl hash, Perl hash, Create a hash, Access hash elements, Read the hash, Read the key and value of the hash, Detect the presence of an element, Gets the hash size, Hash adds or removes elements, Perl hash, The hash is, a collection of key/value, pairs., The hash variable in Perl is in a percent sign (%), The tag starts., Access hash element fo

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 loop

May 13, 2021 17:00 0 Comment Perl

Perl loop, Perl loop, Loop control statements, Unlimited loops, Perl loop, Sometimes we may need to execute the same piece of code multiple times., In general, statements are executed sequentially: the first statem

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 time date

May 13, 2021 17:00 0 Comment Perl

Perl time date, Perl time date, The current time and date, GREENWICH (GMT), Format the date and time, Epoch Time, POSIX function strftime(), Perl time date, In this section, we'll introduce you to the Perl language's handling of time dates., There are several functions in Perl that handle t

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 reference

May 13, 2021 17:00 0 Comment Perl

Perl reference, Perl reference, Create a reference, De-reference, Loop reference, Refers to a function, Perl reference, A reference is a pointer, and a Perl reference is a scale type that can point to a variable, array, hash table (also known as an assoc