public/subjects/expected_variable

expected_variable

Instructions

Create a function named expected_variable that receives a string to compare and an expected string. It should return an Option. Every comparison should be case insensitive.

If the compared string is not in camel case or snake case, expected_variable returns None. You can use the case crate to figure that out. Otherwise, the compared string should be compared to the expected string using the edit_distance function that you have already created.

If the result of edit_distance has more than 50% alikeness to the expected string, considering the length of the expected string and the result of edit_distance, the function should return that value with a '%' symbol after the number. Otherwise expected_value should return None.

Expected Function

You'll need to work out the function signature for yourself.

Usage

Here is a program to test your function:

use expected_variable::*;

fn main() {
    println!(
        "{} close to it",
        expected_variable("On_Point", "on_point").unwrap()
    );
    println!(
        "{} close to it",
        expected_variable("soClose", "So_Close").unwrap()
    );
    println!(
        "{:?}",
        expected_variable("something", "something_completely_different")
    );
    println!(
        "{} close to it",
        expected_variable("BenedictCumberbatch", "BeneficialCucumbersnatch").unwrap()
    );
}

And its output:

$ cargo run
100% close to it
88% close to it
None
67% close to it
$

Notions

• Crate case
• Specifying Dependencies