Enum Surface 

pub enum Surface<'a> {
    Stream,
    Traversal(&'a dyn Fn(&str) -> bool),
}

What a consumption surface supplies to the names a comprehension’s sources and predicates read (comprehension_forms.md §5 V3, §9.5).

Variants

Stream

A coordinate stream or a scoped-kernel stream: no name.

Traversal(&'a dyn Fn(&str) -> bool)

A for traversal: the names of the scope it opens in, which it captures when it opens. The function answers whether that scope has a name.

Implementations

impl Surface<'_>

pub fn supplies(&self, name: &str) -> bool

Whether the surface supplies name.

Trait Implementations

impl<'a> Clone for Surface<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Surface<'a>