Rust Tutorials

How to Slice a Vector in Rust

How to Slice a Vector in Rust ?

Answer

To slice a vector in Rust, you can use the slicing syntax with the range operator `..`. This operator specifies a range from the starting index (inclusive) to the ending index (exclusive).

✐ Examples

1 Slice a Vector by Index Range

In this example,

We create a vector named v1 containing some elements.
We specify the start and end indices.
We use the slicing syntax &v1[start..end] to slice the vector from the start index (inclusive) to the end index (exclusive).

Rust Program

// Slice a vector by index range
let v1 = vec![1, 2, 3, 4, 5];
let start = 1;
let end = 4;
let sliced_v1 = &v1[start..end];
println!("{:?}", sliced_v1); // Output: [2, 3, 4]

Output

[2, 3, 4]

2 Slice a Vector by Logical Condition

In this example,

We create a vector named v2 containing some elements.
We define a logical condition based on which we want to slice the vector.
We filter the vector based on this condition using the filter_map method.

Rust Program

// Slice a vector by logical condition
let v2 = vec![1, 2, 3, 4, 5];
let condition: Vec<bool> = v2.iter().map(|&x| x > 2).collect();
let sliced_v2: Vec<i32> = v2.iter().zip(condition.iter()).filter_map(|(&x, &c)| if c { Some(x) } else { None }).collect();
println!("{:?}", sliced_v2); // Output: [3, 4, 5]

Output

[3, 4, 5]

Summary

In this tutorial, we learned How to Slice a Vector in Rust language with well detailed examples.

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How to Slice a Vector in Rust

How to Slice a Vector in Rust ?

Answer

✐ Examples

1 Slice a Vector by Index Range

Rust Program

Output

2 Slice a Vector by Logical Condition

Rust Program

Output

Summary

More Rust Vectors Tutorials