Enum LastPattern 

pub enum LastPattern<P> {
    Normal(P),
    Ellipsis(Option<LocIdent>),
}

The last match in a data structure pattern. This can either be a normal match, or an ellipsis which can capture the rest of the data structure. The type parameter P is the type of the pattern of the data structure (ellipsis are supported for both array and record patterns).

Example

• In {foo={}, bar}, the last match is an normal match.
• In {foo={}, bar, ..}, the last match is a non-capturing ellipsis.
• In {foo={}, bar, ..rest}, the last match is a capturing ellipsis.

Variants

Normal(P)

The last field is a normal match. In this case the pattern is “closed” so every record fields should be matched.

Ellipsis(Option<LocIdent>)

The pattern is “open” , ..}. Optionally you can bind a record containing the remaining fields to an Identifier using the syntax , ..y}.

Trait Implementations

impl<P: Clone> Clone for LastPattern<P>

fn clone(&self) -> LastPattern<P>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<P: Debug> Debug for LastPattern<P>

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

Formats the value using the given formatter.

impl<P: PartialEq> PartialEq for LastPattern<P>

fn eq(&self, other: &LastPattern<P>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<P> StructuralPartialEq for LastPattern<P>