Rust Tutorials

How to get First Element in Array in Rust

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How to get First Element in Array in Rust ?

Answer

To access the first element of a vector or slice in Rust, you can use indexing with square brackets and the index 0.

✐ Examples

1 Accessing First Element of Vector

In this example,

We create a vector named numbers with numeric values.
We access the first element of the vector using indexing numbers[0] and store it in a variable named first_element.
We print the first element.

Rust Program

fn main() {
    let numbers = vec![10, 20, 30, 40, 50];
    let first_element = numbers[0];
    println!("First element: {}", first_element);
}

Output

First element: 10

2 Accessing First Element of String Vector

In this example,

We create a vector named fruits with string values.
We access the first element of the vector using indexing fruits[0] and store it in a variable named first_fruit.
We print the first element.

Rust Program

fn main() {
    let fruits = vec!["Apple", "Banana", "Cherry", "Date"];
    let first_fruit = fruits[0];
    println!("First fruit: {}", first_fruit);
}

Output

First fruit: Apple

Summary

In this tutorial, we learned How to get First Element in Array in Rust language with well detailed examples.

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How to get First Element in Array in Rust

How to get First Element in Array in Rust ?

Answer

✐ Examples

1 Accessing First Element of Vector

Rust Program

Output

2 Accessing First Element of String Vector

Rust Program

Output

Summary

More Rust Arrays Tutorials