Rust Tutorial | Rust Programming Language Tutorial For Beginners | Rust Training | Edureka

Agenda
Why learn Rust? What is Rust? Rust Fundamentals
01 02 03
RUST

Why Rust?
Cargo packet managerConcurrency
Memory safety
Zero cost abstraction

What is Rust?
Zero cost abstraction Efficient C binding
Ensures memory safety Pattern matching
Error messages
Threads without data
races
Rust is a safe, concurrent, systems programming language developed by a Mozilla
employee, Graydon Hoare in 2006.

Variables
Memory location
Variable name
Variable is a name given to a memory location which acts as a container for storing data.
Syntax:
1 let mut age=15;
2 age=16;

Constants
Constants are fixed values that do not change during execution time.
Syntax:
1
2
const x: f32 = 1.54;
Examples of constants

Scalar Data Types
Character
Boolean
TRUE
FALSE
Integer
Floating-point
12.34 y

Compound Data Types - Arrays
An array is a data structure that contains a list of elements. These elements are all of the
same data type, such as an integer or string.
Syntax:
1
2
let arr=[ ];
0 1 2 3 4 5 6

Compound Data Types - Tuple
A tuple is a data structure that contains a list of elements. These elements can be of
different data type, such as an integer or string.
Syntax:
1
2
let tup: (i32, f64, u8) =
(200, 1.2, 2);
0 1 2 3 4

Strings
A string is basically an array of characters.
Syntax:
1
2
let mut s =
String::new( );
E D U R E K A
0
1
2
3
4
5
6

Functions
A function is a block of organized, reusable code that is used to perform a single, related action.
Functions
Predefined
Functions
User Defined
Functions
Syntax:
1
2
3
fn greetings( ) {
println!(“Hello everyone!”);
}
name of the function
enter parameters here

Conditional Statements - If
Conditional statement is a set of rules performed if a certain condition is met. It is like an
‘If-Then’ statement. (IF a condition is met, THEN an action is performed)
If code
End
Start
True
Condition
False
Exit
Syntax:
1
2
3
if(condition) {
statement;
}

Conditional Statements – If else
If code
End
Start
True
Condition
False
Else if code
Syntax:
1
2
3
4
5
6
if(condition) {
statement a;
}
else {
statement b;
}

Conditional Statements – Else if
If code
End
Start
True
Condition
False
Else if code
Syntax:
1
2
3
4
5
6
7
8
9
if(condition) {
statement a;
}
else if(condition) {
statement b;
}
else {
statement c;
}

Loop
Loop is used to repeat a specific block until some end condition is met.
Start
Conditional Code
Condition
False
True
End loop
Syntax:
1
2
3
loop {
statements;
}

For Loop
Repeatedly executes the loop code while a given condition is TRUE. It
tests the condition before executing the loop body.
Start
Execute Statement (s)
End
Next item from
sequence
If no more itemsItem from
sequenceSyntax:
1
2
3
4
for var in expression
{
block statements;
}

While Loop
While the condition is true, the code within the loop is executed.
Start
Conditional Code
End
True
False
Condition
Syntax:
1
2
3
while(condition) {
loop code;
}

Ownership
When a block of code owns a resource, it is known as ownership.
• Every value has a variable associated which is the
owner
• There can only be one owner at a time
• If the owner goes out of scope, the value associated
with it is destroyed
RULES
Example:
1
2
let x=12;
let y=x;

Structure
A structure is a user-defined data type that consists of variables of
different data types.
Syntax:
1
2
3
4
5
struct Student
{
variable: data-type;
variable: data-type;
}
Name
Age
Father’s name

Enum
Enum is a custom data type which contains some definite values.
Syntax:
1
2
3
4
5
enum enum_name
{
variant1,
variant2,
}
Stop
Ready
Go
Traffic
Signal

Modules
A module is a namespace which contains the definitions of the functions
or its types. A module is a collection of items such as functions, traits,
structs, blocks.
Syntax:
1
2
3
mod module_name {
module body
}
• mod - declares the new module
• pub - makes the visibility modifier as public &
accessible outside the namespace
• use - to import the module into local scope
Keywords used in modules:

Vectors
Vectors allow you to store more than one value in a single data structure
that puts all the values next to each other in memory.
Syntax:
1
2
let v : Vec<i32> =
Vec::new( );
• Stores values of the same data type
• It is denoted by Vec<T>
• It is a growable array
Key points of Vectors:

Rust Tutorial | Rust Programming Language Tutorial For Beginners | Rust Training | Edureka

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