HashSet::contains

pub fn contains(T x) -> bool

use collections::set::{HashSet};

True when x is present.

Called on a HashSet value as value.contains(…).

Parameters#

Returns#

bool

See also#

• HashSet: A set of unique values.
• HashSet::with_capacity: Create a set with bucket count rounded up to the next power of two (min 8).
• HashSet::new: Empty set with default capacity 8.
• HashSet::size: Number of elements.
• HashSet::is_empty: Returns true when the set has no values.
• HashSet::clear: Remove all elements.
• HashSet::insert: Insert x; returns true when newly added.
• HashSet::remove: Remove x; returns true when an element was removed.