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//! Protocol IPersistentCollection

use clojure::lang::*;
use clojure::rust::*;

use crate::*;

pub trait IPersistentCollection: IObject+Sequable {
    fn cons(
        &self,
        o: &Object,
    ) -> ObjResult<Object>;

    fn count(&self) -> ObjResult<usize>;

    fn empty(&self) -> ObjResult<Object>;

    fn equiv(
        &self,
        o: Object,
    ) -> ObjResult<bool>;
}