Library for strings of fixed maximum lengths that can be copied and
stack-allocated using Rust's const generics feature. Certain provided
types such as zstr<8> and str8 are smaller in size than a &str.
let a:str8 = str8::from("abcdef"); //a str8 can hold up to 7 bytes
let a2 = a; // copied, not moved
let ab = a.substr(1,5); // copies substring to new string
assert_eq!(ab, "bcde"); // can compare equality with &str
assert_eq!(ab.len(),4);
println!("str8: {}", &a); // impls Display
assert!(a<ab); // and Ord, Hash, Debug, Eq, other common traits
let astr:&str = a.to_str(); // convert to &str (zero copy)
let aowned:String = a.to_string(); // convert to owned string
let afstr:fstr<8> = fstr::from(a); // fstr is another fixedstr crate type
let azstr:zstr<16> = zstr::from(a); // so is zstr
let a32:str32 = a.resize(); // same kind of string but with 31-byte capacity
let mut u = str8::from("aλb"); //unicode support
assert!(u.set(1,'μ')); // changes a character of the same character class
assert!(!u.set(1,'c')); // .set returns false on failure
assert!(u.set(2,'c'));
assert_eq!(u, "aμc");
assert_eq!(u.len(),4); // length in bytes
assert_eq!(u.charlen(),3); // length in chars
let mut ac:str16 = a.reallocate().unwrap(); //copies to larger capacity type
let remainder = ac.push("ghijklmnopq"); //append up to capacity, returns remainder
assert_eq!(ac.len(),15);
assert_eq!(remainder, "pq");
ac.truncate(9); // keep first 9 chars
assert_eq!(&ac,"abcdefghi");
let c1 = str8::from("abcd"); // string concatenation with + for strN types
let c2 = str8::from("xyz");
let c3 = c1 + c2;
assert_eq!(c3,"abcdxyz");
assert_eq!(c3.capacity(),15); // type of c3 is str16
Consult the documentation for details.