Struct String 

#[repr(C)]
pub struct String {
    pub ptr: *const u8,
    pub len: usize,
}

A borrowed byte string (pointer + length).

The memory is not owned by this struct. The pointer is only valid for the lifetime documented by the API that produces or consumes it.

Fields

ptr: *const u8

Pointer to the string bytes.

len: usize

Length of the string in bytes.

Implementations

impl String

pub unsafe fn to_bytes<'a>(self) -> &'a [u8]

Borrow the string as raw bytes. A null pointer is treated as an empty string; the C API does not promise a non-null pointer for zero-length strings, and slice::from_raw_parts requires one even at length zero.

Safety

The caller must uphold that the associated lifetime is valid with the given context behind the FFI string.

pub unsafe fn to_str<'a>(self) -> &'a str

Safety

The caller must uphold that the associated lifetime is valid with the given context behind the FFI string, and that it contains valid UTF-8 data.

Trait Implementations

impl Clone for String

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for String

impl Debug for String

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for String

fn default() -> Self

Returns the “default value” for a type.

impl<S> From<S> for String

where S: Deref<Target = str>,

fn from(value: S) -> Self

Converts to this type from the input type.