Trait StringType

pub trait StringType: Sealed + Into<String> {
    // Required methods
    fn as_bytes(&self) -> &[u8];
    fn is_allocated(&self) -> bool;
    fn is_empty(&self) -> bool;
    fn len(&self) -> usize;
}

Available on crate feature alloc only.

Trait for standard utf-8 string types. Implemented for &str, String, Box<str> and Cow<'_, str>

Required Methods

fn as_bytes(&self) -> &[u8]

Get the string as bytes

fn is_allocated(&self) -> bool

Check if the string is allocated

fn is_empty(&self) -> bool

Check if the string is empty

fn len(&self) -> usize

Get the length of the string

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl StringType for &str

fn as_bytes(&self) -> &[u8]

fn is_allocated(&self) -> bool

fn is_empty(&self) -> bool

fn len(&self) -> usize

impl StringType for Cow<'_, str>

fn as_bytes(&self) -> &[u8]

fn is_allocated(&self) -> bool

fn is_empty(&self) -> bool

fn len(&self) -> usize

impl StringType for Box<str>

fn as_bytes(&self) -> &[u8]

fn is_allocated(&self) -> bool

fn is_empty(&self) -> bool

fn len(&self) -> usize

impl StringType for String

fn as_bytes(&self) -> &[u8]

fn is_allocated(&self) -> bool

fn is_empty(&self) -> bool

fn len(&self) -> usize

Implementors