87 lines
2.3 KiB
Rust
87 lines
2.3 KiB
Rust
#![allow(unused)]
|
|
//#![feature(plugin)]#![plugin(clippy)]
|
|
use std::collections::{HashMap, HashSet};
|
|
use std::cmp::Eq;
|
|
use std::hash::{Hash, BuildHasher};
|
|
|
|
pub trait Foo<T>: Sized {
|
|
fn make() -> (Self, Self);
|
|
}
|
|
|
|
impl<K: Hash + Eq, V> Foo<i8> for HashMap<K, V> {
|
|
fn make() -> (Self, Self) {
|
|
// OK, don't suggest to modify these
|
|
let _: HashMap<i32, i32> = HashMap::new();
|
|
let _: HashSet<i32> = HashSet::new();
|
|
|
|
(HashMap::new(), HashMap::with_capacity(10))
|
|
}
|
|
}
|
|
impl<K: Hash + Eq, V> Foo<i8> for (HashMap<K, V>,) {
|
|
fn make() -> (Self, Self) {
|
|
((HashMap::new(),), (HashMap::with_capacity(10),))
|
|
}
|
|
}
|
|
impl Foo<i16> for HashMap<String, String> {
|
|
fn make() -> (Self, Self) {
|
|
(HashMap::new(), HashMap::with_capacity(10))
|
|
}
|
|
}
|
|
|
|
impl<K: Hash + Eq, V, S: BuildHasher + Default> Foo<i32> for HashMap<K, V, S> {
|
|
fn make() -> (Self, Self) {
|
|
(HashMap::default(), HashMap::with_capacity_and_hasher(10, Default::default()))
|
|
}
|
|
}
|
|
impl<S: BuildHasher + Default> Foo<i64> for HashMap<String, String, S> {
|
|
fn make() -> (Self, Self) {
|
|
(HashMap::default(), HashMap::with_capacity_and_hasher(10, Default::default()))
|
|
}
|
|
}
|
|
|
|
|
|
impl<T: Hash + Eq> Foo<i8> for HashSet<T> {
|
|
fn make() -> (Self, Self) {
|
|
(HashSet::new(), HashSet::with_capacity(10))
|
|
}
|
|
}
|
|
impl Foo<i16> for HashSet<String> {
|
|
fn make() -> (Self, Self) {
|
|
(HashSet::new(), HashSet::with_capacity(10))
|
|
}
|
|
}
|
|
|
|
impl<T: Hash + Eq, S: BuildHasher + Default> Foo<i32> for HashSet<T, S> {
|
|
fn make() -> (Self, Self) {
|
|
(HashSet::default(), HashSet::with_capacity_and_hasher(10, Default::default()))
|
|
}
|
|
}
|
|
impl<S: BuildHasher + Default> Foo<i64> for HashSet<String, S> {
|
|
fn make() -> (Self, Self) {
|
|
(HashSet::default(), HashSet::with_capacity_and_hasher(10, Default::default()))
|
|
}
|
|
}
|
|
|
|
pub fn foo(_map: &mut HashMap<i32, i32>, _set: &mut HashSet<i32>) {
|
|
}
|
|
|
|
macro_rules! gen {
|
|
(impl) => {
|
|
impl<K: Hash + Eq, V> Foo<u8> for HashMap<K, V> {
|
|
fn make() -> (Self, Self) {
|
|
(HashMap::new(), HashMap::with_capacity(10))
|
|
}
|
|
}
|
|
};
|
|
|
|
(fn $name:ident) => {
|
|
pub fn $name(_map: &mut HashMap<i32, i32>, _set: &mut HashSet<i32>) {
|
|
}
|
|
}
|
|
}
|
|
|
|
gen!(impl);
|
|
gen!(fn bar);
|
|
|
|
fn main() {}
|