Macro parse_or_warn 

macro_rules! parse_or_warn {
    ($s:expr, $ty:ty, $default:expr, $context:expr) => { ... };
}

Parse a string into a type, returning a default and logging on failure.

Drop-in replacement for str.parse::<T>().unwrap().

Examples

use unwrap_safe::parse_or_warn;

let port = parse_or_warn!("not_a_number", u16, 8080, "PORT config");
assert_eq!(port, 8080);

let port = parse_or_warn!("3000", u16, 8080, "PORT config");
assert_eq!(port, 3000);