What is string.eq_ignore_ascii_case() in Rust programming?

Overview

We can check if two strings are the case-sensitive match using the eq_ignore_ascii_case() method. The method also lets us check if they are ASCII strings.

Syntax

string1.eq_ignore_ascii_case(&string2)
The syntax for checking if two strings are case-insensitive

Parameters

string1: This is the string we want to compare with another string2.

Return value

The value returned is a boolean value. If the strings match, then a true is returned. Otherwise, a false is returned.

Example

fn main() {
 // create some strings
  let str1 = "Welcome";
  let str2 = "WELCOME";   
  let str3 = "tO"; 
  let str4 = "tO";
  let str5 = "EDPREsso";
  let str6 = "edpresso";
  let str7 = "Rust";
  let str8 = "Solidity";
  // check if they match without minding their case
  println!("{}", str1.eq_ignore_ascii_case(&str2)); // true 
  println!("{}", str3.eq_ignore_ascii_case(&str4)); // true  
  println!("{}", str5.eq_ignore_ascii_case(&str6)); // true
  println!("{}", str7.eq_ignore_ascii_case(&str8)); // false
}

Explanation

  • Lines 3–8: We declare some strings.
  • Lines 11–14: We check if the strings are ASCII and that they match with their cases ignored. We print the result to the console.
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