pub fn retain<F>(&mut self, mut f: F)
    where
        F: FnMut(&K) -> bool
    {
        let mut retain = vec![];
        while let Some(x) = self.0.pop_front() {
            if f(&x.0) {
                retain.push(x);
            }
        }
        for x in retain {
            self.0.insert(x.0, x.1);
        }
    }
/// retains elements that matches the predicate
retains elements that matches the predicate
retains elements that matches the predicate
pub fn retain<F>(&mut self, mut f: F)
    where
        F: FnMut(&K) -> bool
    {
        let mut retain = vec![];
        while let Some(x) = self.0.pop_front() {
            if f(&x.0) {
                retain.push(x);
            }
        }
        for x in retain {
            self.0.insert(x.0, x.1);
        }
    }
pub fn retain < F > ( & mut self , mut f : F ) where F : FnMut ( & K ) -> bool { let mut retain = vec ! [ ] ; while let Some ( x ) = self . 0 . pop_front ( ) { if f ( & x . 0 ) { retain . push ( x ) ; } } for x in retain { self . 0 . insert ( x . 0 , x . 1 ) ; } }
retains elements that matches the predicate
retains elements that matches the predicate
&mut self
f
F
&mut self
f
F