What is a programming language.

Programming language is a series of code instructions that run the CPU and process them and gives the output to the user.

There are a different set of programming languages

  • Procedural language

  • Functional Programming language

  • Object-oriented programming language

    Similarly, There are two types of programming languages

    High-level programming language Low-level languages also called machine or assembly languages

Difference between Procedural and Object-Oriented programming languages

Here is a comparison of both languages.

Procedure LanguageObject-Oriented Language
Contains ProcedureContains Methods
RecordsObjects
ModulesClasses

Difference between High level and low-level programming languages

Machines and computers understand low-level language code only. So high-level languages need an interpreter or compiler to generate low-level machine-readable code.

Hight Level LanguageLow-Level Languages
Code written need to compile to machine-readable code,because of compilation time, It takes some time to processLow-level code understands by machines, and directly runs, so faster
Human readable codemachine readable code
It is very easy to write and modify codeIt is difficult to write code directly
Productivity is good as takes lesser time to write a codeTime is taken to write code is more
Code is easy to run on different devices and platforms with lesser modificationsCode only runs on specific computers or types, Need code rewrite to run on another machine
Compilers and interpreter requiredNot required any middleman tools
Examples languages are Java,Dart, Golang etcAssembly is an example

Language Type checking

Type checking is a process of evaluating variable type at compile type or runtime There are two types of type checking

  • Statically Type checking

Languages allow you to type check at compile type.

This variable is declared and assigned to a type, you can not change the type. Types are assigned with variables, not data.

For example, In java, You declare a variable of the type String.

String str="Welcome"; // allowed
str=20 // Not allowed to reassign the values
  • Dynamically type checking

These languages do type checking at runtime. In this variable is declared and assigned to a type, you can change the type and values dynamically. Types are assigned with data, not variables. For example, In javascript, You declare a variable of the type String.

var str="Welcome"; // allowed
str=20 // allowed

What is the difference between Statically Typed and Dynamically Typed programming language

Statically typed languagesDynamically typed languages
Type checking is done at compile timeType checking is done at Run time
Variables types must be declaredVariables types are not required but dynamic types
Reassign variable with different type value is not possibleAllows to reassign variable with different type data
Variables and expressions are evaluated at compile typeVariables and expressions are evaluated at runtime
Java,C,C++Javascript,Python,Ruby
Advantages are errors are caught at compile timeError-prone at runtime time
Good in terms of performanceLower performance
Compilation time is moreCompilation time is less

Static and Dynamic variable scopes

There are two types scoping in variables on a language

  • Lexical scoping or static scope
  • Dynamic scoping

Different types of programming

  • Imperative programming

In this programming, Line of code is executed sequentially, and returns the result.

  • Functional Programming: In this, Every feature is written in as a functions and assign to variables to change state.

  • Reactive Programming

This is based on asynchronous data of streams of events, pushes the data when event is listened for subscribe.

Programming languages provides different functions types as given below

  • Lambda or Arrow Functions
  • First Class Functions
  • High Order Functions
  • First Order Functions
  • Unary Functions
  • Currying Functions
  • Pure Functions
  • Impure Functions

First Class Functions in programming language.

Functions are treated similarly to like a variables. Variables can be assigned and pass, return from Functions. Similarly Functions can be assigned, pass as an argument to Function and Returned from a Function

Programming language paradigm

There are many categories of language paradigm

  • Imperative
  • Functional
  • Object Oriented
  • Declarative

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Posted January 1, 0001 by  ‐ 1 min read

Perl - try catch

Learn Perl try catch and, or not with code examples Operator Precedence and Associativity

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Perl - while and do while

Perl while and do while examples Perl Programming language tutorial for beginner examples.

Posted January 1, 0001 by  ‐ 3 min read

Perl- Ternary

Perl Ternary Operator in Programming language tutorial for beginner examples Perl Ternary Operator assignment, multiple conditions conditional operator code

Posted January 1, 0001 by  ‐ 2 min read

Typescript Language

This is a getting start page for learning Typescript tutorials with examples.

Posted January 1, 0001 by  ‐ 2 min read

Typescript - Installation

Learn How to install Typescript languages and compiler with and hello world tutorials with examples.

Posted January 1, 0001 by  ‐ 1 min read

Lisp - tutorials

This tutorial covers free Lisp tutorials developers for example

Posted January 1, 0001 by  ‐ 1 min read

Lisp - Comments

This tutorial covers Lisp comments Single multi-line comments, and block comments with example

Posted January 1, 0001 by  ‐ 1 min read

Lisp - Hello World

This tutorial covers Basic simple Hello World program free Lisp tutorials developers for example

Posted January 1, 0001 by  ‐ 1 min read