Enum IndexConvention 

pub enum IndexConvention {
    None,
    Byte,
    Codepoint,
}

Which index convention a builtin’s integer positions use. Recorded so the stdlib reference states it and a runtime test checks it; it is documentation, not a semantic switch (#778).

Variants

None

No integer positions in the signature.

Byte

Positions and lengths count UTF-8 bytes.

Codepoint

Positions and lengths count Unicode scalar values.

Trait Implementations

impl Clone for IndexConvention

fn clone(&self) -> IndexConvention

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IndexConvention

impl Debug for IndexConvention

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

Formats the value using the given formatter.

impl Eq for IndexConvention

impl PartialEq for IndexConvention

fn eq(&self, other: &IndexConvention) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for IndexConvention