What is character.eq_ignore_ascii_case() in Rust?
Overview
In Rust, we can check if two ASCII values are a case-insensitive match. This means that without checking their casing, we check if they are ASCII values and if they match. This can be found by using the method eq_ignore_ascii_case() .
A character is said to be an ASCII value if it is a number from 0 to 9 or a letter A to Z, or if it's some special character.
Syntax
character1.eq_ignore_ascii_case(&character2)
Syntax for eq_ignore_ascii_case() method in Rust
Parameters
character1: This is a character we want to compare with another character2.
Return value
The value returned is a boolean value. If the characters match, then a true is returned. Otherwise, a false is returned.
Example
fn main(){// create some characterslet char1 = 'i';let char2 = 'I';let char3 = '☀';let char4 = 'M';let char5 = 'm';let char6 = 'k';// check if they match without minding their caseprintln!("{}", char1.eq_ignore_ascii_case(&char2)); // trueprintln!("{}", char2.eq_ignore_ascii_case(&char3)); // falseprintln!("{}", char5.eq_ignore_ascii_case(&char4)); // trueprintln!("{}", char6.eq_ignore_ascii_case(&char5)); // false}
Explanation
- Lines 3–8: We declare some characters.
- Lines 11–14: We check if the characters are ASCII values and that they match with their cases ignored. Then we print the result to the console.
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