lib_xch 0.5.0

Crate xch-ceb's official lib
Documentation 
// Copyright 2017-2018 LEXUGE
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pub struct ChemicalEquation {
    pub left_num: usize,
    pub right_num: usize,
    pub sum: usize, // sum of the left_num and the right_num
}