Function parse_bool 

pub fn parse_bool(val: &str) -> Result<bool>

Parse a string as a boolean value, returning an error if invalid.

This function strictly validates that the input is a valid boolean representation.

Arguments

• val - The string value to parse

Returns

• Ok(true) - For truthy values: “1”, “true”, “on”, “yes” (case-insensitive)
• Ok(false) - For falsey values: “0”, “false”, “off”, “no” (case-insensitive)
• Err(_) - For any other value

Example

assert_eq!(parse_bool("true")?, true);
assert_eq!(parse_bool("0")?, false);
assert!(parse_bool("maybe").is_err());