How to get Substring between two Specific Characters in Rust - Step by Step Examples

How to get Substring between two Specific Characters in Rust ?

Answer

To get the substring between two specific characters in Rust, you can use methods like `find` and slicing with the indices of the characters.

✐ Examples

1 Substring Between '/' and '?' in "https://example.com/page?query=1"

In this example,

We create a string slice url with a value of "https://example.com/page?query=1".
We use the find method to find the positions of '/' and '?'.
We calculate the start index as the position of '/' plus 1 and the end index as the position of '?'.
We use slicing with the calculated indices to extract the substring.
We display the extracted substring.

Rust Program

fn main() {
    let url = "https://example.com/page?query=1";
    let start = url.find('/') + 1;
    let end = url.find('?');
    if let Some(start) = start {
        if let Some(end) = end {
            let substring = &url[start..end];
            println!("Substring between '/' and '?': {}", substring);
        }
    }
}

Output

Substring between '/' and '?': page

2 Substring Between ',' and '!' in "Hello,World!"

In this example,

We create a string slice str with a value of "Hello,World!".
We use the find method to find the positions of ',' and '!'.
We calculate the start index as the position of ',' plus 1 and the end index as the position of '!'.
We use slicing with the calculated indices to extract the substring.
We display the extracted substring.

Rust Program

fn main() {
    let str = "Hello,World!";
    let start = str.find(',') + 1;
    let end = str.find('!');
    if let Some(start) = start {
        if let Some(end) = end {
            let substring = &str[start..end];
            println!("Substring between ',' and '!': {}", substring);
        }
    }
}

Output

Substring between ',' and '!': World

Summary

In this tutorial, we learned How to get Substring between two Specific Characters in Rust language with well detailed examples.

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