Enum HeaderValue 

pub enum HeaderValue {
    Static(&'static str),
    Inline(ArrayString<MAX_INLINE_VALUE>),
    Heap(String),
}

An HTTP response header value that avoids heap allocation for short strings.

Variant	Storage	Allocation
Static	pointer	none
Inline	64-byte array on stack	none
Heap	String on heap	one

Variants

Static(&'static str)

A compile-time constant string — zero cost to store.

Inline(ArrayString<MAX_INLINE_VALUE>)

A short (≤ 64 byte) runtime string stored on the stack.

Heap(String)

A long runtime string that did not fit inline.

Implementations

impl HeaderValue

pub fn as_str(&self) -> &str

Return the value as a plain &str.

Trait Implementations

impl Clone for HeaderValue

fn clone(&self) -> HeaderValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HeaderValue

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

Formats the value using the given formatter.