**D** (also known as **Dlang**) is a multi-paradigm system programming language created by Walter Bright at Digital Mars and released in 2001. D combines a wide range of powerful programming concepts from the lowest levels to the highest. It emphasizes memory safety, program correctness, and pragmatism.

Some key benefits of D are outlined below.

# Multi-paradigm language
D comes with multiple paradigms:


- **Concurrent programming**: has language constructs for concurrency, these may involve multi-threading, etc.

- **Functional programming**: uses the evaluation of mathematical functions and is capable of avoiding state and mutable data.
- **Meta programming**: writing programs that write or manipulate other programs (or themselves) as their data.
- **Generic programming**: uses algorithms written in terms of to-be-specified-later types that are then instantiated as needed-for- specific-types provided as parameters.
- **Imperative programming**: explicit statements that change a program state.
- **Object-oriented programming**: uses data structures, that consist of data fields and methods, together with their interactions (objects) to design programs.

# Memory safety and management 
D does not require explicit memory management. It has a garbage collector that scans the memory at unspecified times, determines the objects that cannot possibly be reached by the program anymore, destroys them, and reclaims their memory locations.

# Productivity 
D helps to increase productivity by providing features such as:

- Modules
- Templates 
- Associative arrays
- Documentation
# Performance and reliability
D is a highly reliable, high-performance language; thus, it allows the programmer to write and compile codes faster and without any bugs. It achieves this by:

- Lightweight aggregates
- Inline assembler 
- Contracts
- Unit testing
- Debug attributes and statements
- Exception handling
- Synchronization 
# Basic example
The following example shows how to print “Hello World” in D.
 

import std.stdio;

void main() {
    writeln("Hello World!");
}

What is the D programming language?

Some key benefits of D are outlined below. Multi-paradigm language D comes with multiple paradigms: 