Method retain

crates/core/src/alloc/vec.rs:209–214

Same as [`std::vec::Vec::retain`].

(&mut self, f: F)

    /// Same as [`std::vec::Vec::retain`].
    pub fn retain<F>(&mut self, f: F)
    where
        F: FnMut(&T) -> bool,
    {
        self.inner.retain(f);
    }

    /// Same as [`std::vec::Vec::retain_mut`].
    pub fn retain_mut<F>(&mut self, f: F)