How to Initialize an Array in Rust - Step by Step Examples



How to Initialize an Array in Rust ?

Answer

To initialize an array in Rust, you can use array literals or the array macro.



✐ Examples

1 Initialize Integer Array using Array Literals

In this example,

  1. We declare an array named numbers with integer values using array literals.
  2. This creates an integer array in Rust.
  3. We print the array elements.

Rust Program

fn main() {
    let numbers = [1, 2, 3, 4, 5];
    for number in &numbers {
        println!("{} ", number);
    }
}

Output

1 2 3 4 5 

2 Initialize Character Array using array Macro

In this example,

  1. We declare an array named fruits with character values using the array! macro.
  2. This creates a character array in Rust.
  3. We print the array elements.

Rust Program

fn main() {
    let fruits = array!['A', 'p', 'p', 'l', 'e'];
    for fruit in fruits.iter() {
        println!("{} ", fruit);
    }
}

Output

A p p l e 

Summary

In this tutorial, we learned How to Initialize an Array in Rust language with well detailed examples.




More Rust Arrays Tutorials

  1. How to Declare an Array in Rust ?
  2. How to Initialize an Array in Rust ?
  3. How to Access Array Elements in Rust ?
  4. How to Access Array Elements using Index in Rust ?
  5. How to get First Element in Array in Rust ?
  6. How to get Last Element in Array in Rust ?
  7. How to check if an Array is Empty in Rust ?
  8. How to check if an Array is Not Empty in Rust ?
  9. How to get Sub Array in Rust ?
  10. How to Get Array Length in Rust ?
  11. How to Iterate Over an Array in Rust ?
  12. How to Iterate Over an Array in Reverse Order in Rust ?
  13. How to get the Index of Specified Element in an Array in Rust ?
  14. How to check if Specified Element is present in the Array in Rust ?
  15. How to count the Number of Occurrences of Specified Element in the Array in Rust ?
  16. How to Sort an Array in Rust ?
  17. How to Sort an Array in Ascending Order in Rust ?
  18. How to Sort an Array in Descending Order in Rust ?
  19. How to create a Two Dimensional Array in Rust ?
  20. How to Iterate over a Two Dimensional Array in Rust ?
  21. How to create a Three Dimensional Array in Rust ?
  22. How to Copy an Array in Rust ?
  23. How to Split an Array in Rust ?
  24. How to Join Arrays in Rust ?
  25. How to check if Two Arrays are Equal in Rust ?
  26. How to check if Two Arrays have Same Elements (Regardless of Order) in Rust ?
  27. How to Convert an Array of Integers to an Array of Strings in Rust ?
  28. How to Convert an Array of Strings to an Array of Integers in Rust ?
  29. How to Reverse an Array in Rust ?
  30. How to Shuffle an Array in Rust ?
  31. How to Rotate Elements in an Array in Rust ?
  32. How to Filter Elements of an Array based on a Condition in Rust ?
  33. How to Declare an Integer Array in Rust ?
  34. How to Declare a Float Array in Rust ?
  35. How to Declare a String Array in Rust ?
  36. How to Remove Duplicates in an Array in Rust ?
  37. How to Remove Specific Element from an Array in Rust ?
  38. How to Remove Element from Array based on a Condition in Rust ?
  39. How to Sort a String Array in Dictionary Order in Rust ?
  40. How to Concatenate Strings in Array in Rust ?