const-str

compile-time string operations

Examples

```rust asserteq!(conststr::to_lowercase!("HELLO"), "hello");

asserteq!(conststr::to_uppercase!("hello"), "HELLO");

asserteq!(conststr::replace!("this is old", "old", "new"), "this is new"); ```

feature regex

rust use regex::Regex; let re = const_str::verified_regex!(r"^\d{4}-\d{2}-\d{2}$"); assert!(Regex::new(re).is_ok());

feature http

rust use http::header::HeaderName; let name = const_str::verified_header_name!("content-md5"); assert_eq!(HeaderName::from_static(name).as_str(), "content-md5");