fn_macro

Example

    use fn_macro::prelude::*;
        
    #[test]
    fn test() {
        assert_eq!(1, if_else!(true, 1, 2));
        assert_eq!(1, if_unwrap_or_default!(Some(1)));
        assert_eq!(1, if_unwrap_or_default!(None, 1));
        assert_eq!(1, if_ok_or_default!(Ok::<i32, String>(1)));
        assert_eq!(1, if_ok_or_default!(Err(""), 1));
        let mut v:Option<i32>= None;
        assert_eq!(0, if_panic!(v.unwrap()));
        assert_eq!(1, if_panic!(v.unwrap(), 1));
        println!("{:?}", hashmap!(1 => 2));
        println!("{:?}", hashmap!(1 => 2, 2 => 3));
        println!("{:?}", btreeset!(1,2));
        println!("{:?}", hashset!(1,2));
    }