Rust Tutorials

How to Append a Character to beginning of a String in Rust

How to Append a Character to beginning of a String in Rust ?

Answer

To append a character to the beginning of a string in Rust, you can use the `+` operator for concatenation or the `insert_str()` method of the `String` type.

✐ Examples

1 Append 'H' to "ello"

In this example,

We create a string named str1 with a value of "ello".
We then use the + operator to prepend the character 'H' to str1.
Finally, we print the modified string to the console.

Rust Program

let mut str1 = String::from("ello");
str1 = "H".to_string() + &str1;
println!("{}", str1);

Output

Hello

2 Append 'W' to "orld"

In this example,

We create a string named str2 with a value of "orld".
We then use the insert_str() method to insert the character 'W' at index 0 of str2.
Finally, we print the modified string to the console.

Rust Program

let mut str2 = String::from("orld");
str2.insert_str(0, "W");
println!("{}", str2);

Output

World

Summary

In this tutorial, we learned How to Append a Character to beginning of a String in Rust language with well detailed examples.

◀ Previous Next ▶

Rust Tutorials

Rust How-Tos

How to Append a Character to beginning of a String in Rust

How to Append a Character to beginning of a String in Rust ?

Answer

✐ Examples

1 Append 'H' to "ello"

Rust Program

Output

2 Append 'W' to "orld"

Rust Program

Output

Summary

More Rust Strings Tutorials