rustrust string comparison

String comparison in Rust is done using the cmp method. This method takes two strings as arguments and returns an Ordering enum, which can be either Less, Equal, or Greater.

Example code

let string1 = "Hello";
let string2 = "World";

let comparison = string1.cmp(&string2);

println!("{:?}", comparison);

Output example

Less

The cmp method compares two strings lexicographically, meaning it compares the characters in each string one by one until it finds a difference. In the example above, the first character of string1 is H, which is less than the first character of string2, which is W. Therefore, the comparison returns Less.

Code explanation

• let string1 = "Hello";: This line creates a string variable called string1 and assigns it the value Hello.
• let string2 = "World";: This line creates a string variable called string2 and assigns it the value World.
• let comparison = string1.cmp(&string2);: This line calls the cmp method on string1 and passes string2 as an argument. The cmp method returns an Ordering enum, which is stored in the comparison variable.
• println!("{:?}", comparison);: This line prints the value of the comparison variable to the console.

Helpful links

• Rust Documentation - Strings

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