| /******************************************************************************* |
| * Copyright (c) 2021 CentraleSupelec, CEA-LIST |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Erwan Mahé (CentraleSupelec) - initial API and implementation |
| *******************************************************************************/ |
| |
| use std::fmt::Write; |
| use std::fmt::Display; |
| |
| |
| pub fn powerset<T>(s: &[T]) -> Vec<Vec<T>> where T: Clone { |
| (0..2usize.pow(s.len() as u32)).map(|i| { |
| s.iter().enumerate().filter(|&(t, _)| (i >> t) % 2 == 1) |
| .map(|(_, element)| element.clone()) |
| .collect() |
| }).collect() |
| } |
| |
| pub fn fold_vec_to_string<T: Display>(my_vec : &Vec<T>) -> String { |
| my_vec.iter().fold(String::new(),|mut s,n| {write!(s,"{}",n).ok(); s}) |
| } |
