pub unsafe fn from_boxed_utf8_unchecked(v: Box<[u8]>) -> Box<str>
将字节的 boxed 切片转换为 boxed 字符串切片,而无需检查该字符串是否包含有效的 UTF-8。
基本用法:
let smile_utf8 = Box::new([226, 152, 186]); let smile = unsafe { std::str::from_boxed_utf8_unchecked(smile_utf8) }; assert_eq!("☺", &*smile);