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 Language | Object-Oriented Language |
|---|---|
| Contains Procedure | Contains Methods |
| Records | Objects |
| Modules | Classes |
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 Language | Low-Level Languages |
|---|---|
| Code written need to compile to machine-readable code,because of compilation time, It takes some time to process | Low-level code understands by machines, and directly runs, so faster |
| Human readable code | machine readable code |
| It is very easy to write and modify code | It is difficult to write code directly |
| Productivity is good as takes lesser time to write a code | Time is taken to write code is more |
| Code is easy to run on different devices and platforms with lesser modifications | Code only runs on specific computers or types, Need code rewrite to run on another machine |
| Compilers and interpreter required | Not required any middleman tools |
| Examples languages are Java,Dart, Golang etc | Assembly 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 languages | Dynamically typed languages |
|---|---|
| Type checking is done at compile time | Type checking is done at Run time |
| Variables types must be declared | Variables types are not required but dynamic types |
| Reassign variable with different type value is not possible | Allows to reassign variable with different type data |
| Variables and expressions are evaluated at compile type | Variables and expressions are evaluated at runtime |
| Java,C,C++ | Javascript,Python,Ruby |
| Advantages are errors are caught at compile time | Error-prone at runtime time |
| Good in terms of performance | Lower performance |
| Compilation time is more | Compilation 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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Perl - Boolean
Learn how to handle boolean true and false in Perl Programming language tutorial for beginner examples, usage of subroutine or function return boolean values
Posted January 1, 0001 by ‐ 1 min read
Perl - Commands
Perl Command options with examples Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 1 min read
Perl - Comments
Write Single and Multi-line or block code comments in Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 2 min read
Perl - Comments
variable declaration with an array, scalar, and hashes, naming rules, interpolation syntax Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 4 min read
Perl - Comparison operator
Learn Perl Comparison equal and Relational code examples Operator Precedence and Associativity examples
Posted January 1, 0001 by ‐ 3 min read
Perl - Datatypes
Perl Data types examples scalar, array, and hash data types in Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 2 min read
Perl - Directory
Perl Data types examples scalar, array and hashs data types in Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 2 min read
Perl - File
Perl File Operations with examples Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 2 min read
Perl - foreach
Perl foreach examples iterate array elements in Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 1 min read
Perl - Functions
Perl Inbuilt Functions Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 1 min read
Perl - Hash
Perl hash declaration, add, remove, iteration, and size, iterate of a hash in Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 2 min read
Perl - Hello World
Learn Perl Hello World First program and how to execute and run script tutorial code examples
Posted January 1, 0001 by ‐ 3 min read
Perl - HelloWorld
Write Hello World Simple First program examples in Perl Programming language tutorial for beginners and how to execute and run examples.
Posted January 1, 0001 by ‐ 2 min read
Perl - IDE
Perl Language Editor and IDE support in Windows Mac and Unix OS examples.
Posted January 1, 0001 by ‐ 1 min read
Perl - If else
Learn Perl If else conditional statement using string, one line simple logical and or operator tutorial for beginner examples.
Posted January 1, 0001 by ‐ 4 min read
Perl - Install on Unix
How to Download and install Perl Programming language on Linux and Unix tutorial for beginner examples.
Posted January 1, 0001 by ‐ 1 min read
Perl - Install on Windows
How to Download and install Per on WindowsPerl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 2 min read
Perl - logical operator
Learn Perl logical operator and, or not with code examples Operator Precedence and Associativity
Posted January 1, 0001 by ‐ 1 min read
Perl - Loop Controls
Loop Control in Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 1 min read
Perl - Modules
Perl Array declaration, add, remove, iteration, and size of an array in Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 3 min read
Perl - Modules
Perl Modules create use require and constructor and destructor in Perl Programming language tutorial for beginner examples.
Posted January 1, 0001 by ‐ 2 min read
Perl - operator
Learn Perl logical operator and, or not with code examples Operator Precedence and Associativity
Posted January 1, 0001 by ‐ 2 min read
Perl - operator
Learn Perl logical operator and, or not with code examples Operator Precedence and Associativity
Posted January 1, 0001 by ‐ 1 min read
Perl - Range operator
Learn Perl Range operator with code examples Operator Precedence and Associativity
Posted January 1, 0001 by ‐ 1 min read
Perl - String
Learn Perl logical operator and, or not with code examples Operator Precedence and Associativity
Posted January 1, 0001 by ‐ 2 min read
Perl - String operator
Learn Perl String operators code examples Operator Precedence and Associativity
Posted January 1, 0001 by ‐ 1 min read
Perl - Subroutine
Perl Subroutine tutorial and examples create use arguments and return statements nested functions, parameter passing, private subroutine with code examples
Posted January 1, 0001 by ‐ 3 min read
Perl - try catch
Learn Perl try catch and, or not with code examples Operator Precedence and Associativity
Posted January 1, 0001 by ‐ 1 min read
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
