rust/rust.grammar/test/unit/data/impl-example.rs

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

// NOTE: If you modify this file test will probably fail.

struct Val {
    val: f64,
}

struct GenVal<T> {
    gen_val: T,
}

// impl of Val
impl Val {
    fn value(&self) -> &f64 {
        &self.val
    }
}

// impl of GenVal for a generic type `T`
impl<T> GenVal<T> {
    fn value(&self) -> &T {
        &self.gen_val
    }
}

fn main() {
    let x = Val { val: 3.0 };
    let y = GenVal { gen_val: 3i32 };

    // if fold test
    let z = if 1 == 2 {
        "Wow!"
    } else {
        "Ok"
    };

    println!("{}, {}", x.value(), y.value());
}