How to Check if String starts with Specific Prefix in Rust - Step by Step Examples

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How to Check if String starts with Specific Prefix in Rust ?

Answer

To check if a string starts with a specific prefix in Rust, you can use the starts_with() method of the String class.

✐ Examples

1 Check if "Hello World" starts with prefix "Hello"

In this example,

We create a string named str1 with a value of "Hello World".
We use the starts_with() method of the string object str1 with the prefix "Hello".
The starts_with() method returns true if the string starts with the specified prefix; otherwise, it returns false.
Finally, we print the result to standard output.

Rust Program

fn main() {
    let str1 = String::from("Hello World");
    let starts_with_hello = str1.starts_with("Hello");
    println!("String starts with prefix 'Hello': {}", starts_with_hello);
}

Output

String starts with prefix 'Hello': true

2 Check if "apple" starts with prefix "banana"

In this example,

We create a string named str2 with a value of "apple".
We use the starts_with() method of the string object str2 with the prefix "banana".
The starts_with() method returns true if the string starts with the specified prefix; otherwise, it returns false.
Finally, we print the result to standard output.

Rust Program

fn main() {
    let str2 = String::from("apple");
    let starts_with_banana = str2.starts_with("banana");
    println!("String starts with prefix 'banana': {}", starts_with_banana);
}

Output

String starts with prefix 'banana': false

Summary

In this tutorial, we learned How to Check if String starts with Specific Prefix in Rust language with well detailed examples.

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How to Check if String starts with Specific Prefix in Rust - Step by Step Examples

How to Check if String starts with Specific Prefix in Rust ?

Answer

✐ Examples

1 Check if "Hello World" starts with prefix "Hello"

Rust Program

Output

2 Check if "apple" starts with prefix "banana"

Rust Program

Output

Summary

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