rustHow do you get the number of characters in a Rust string?
You can get the number of characters in a Rust string using the len()
method. This method returns the length of the string as an usize
type.
Example code
let my_string = "Hello World!";
let length = my_string.len();
println!("The length of '{}' is {}.", my_string, length);
Output example
The length of 'Hello World!' is 12.
Code explanation
let my_string = "Hello World!";
: This line declares a string variablemy_string
and assigns it the value"Hello World!"
.let length = my_string.len();
: This line calls thelen()
method on themy_string
variable and assigns the result to thelength
variable.println!("The length of '{}' is {}.", my_string, length);
: This line prints the length of the string to the console.
Helpful links
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