fixed_len_str
This Rust library provides a procedural macro for declare a wrapper struct for an array with the size given by the tokens which derefs to str
.
For a proper API documentation of one of length 12 see fixed_len_str_example.
If you want to use serde to serialize and deserialize the fixed_len_str use
features = ["serde_support"]
,if you want to match a pattern of type
FnMut(FixedStr$len) -> bool
on a str
use features = ["pattern_pred_support"]
and if you want the documentation visible at the expansion use default-features = false
.
Usage
use fixed_len_str::fixed_len_str;
fixed_len_str!(3);
fn main() {
let string = FixedStr3::from("abc");
assert_eq!(string, "abc");
let string = unsafe { FixedStr3::new_unchecked(*b"abc") };
assert_eq!(string, "abc");
let mut string = FixedStr3::default(); string.fill_str("abc");
assert_eq!(string, "abc");
let mut string = unsafe { FixedStr3::new_unchecked([b'a', b'b', 0]) };
assert_eq!(string, "ab");
string.fill_char('c');
assert_eq!(string, "abc");
assert_eq!(string.as_bytes(), (&string[..]).as_bytes()); assert_eq!(string.into_string(), String::from(&string[..])); assert_eq!(FixedStr3::from(&[][..]), "");
if cfg!(feature = "pattern_pred_support") {
use fixed_str3::Closure;
assert_eq!("aaabb".matches(Closure::from(|s: FixedStr3| s == "aaa" || s == "bb"))
.collect::<Vec<&str>>(), ["aaa", "bb"]);
}
}