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// =============================================================================
// Copyright (c) 2025 - 2026 Haixing Hu.
//
// SPDX-License-Identifier: Apache-2.0
//
// Licensed under the Apache License, Version 2.0.
// =============================================================================
//! Defines the `BoxBinaryMutatingFunction` public type.
use BoxBiMutatingFunction;
// ============================================================================
// Type Aliases for BinaryMutatingOperator (BiMutatingFunction<T, U, R> where T
// == U)
// ============================================================================
/// A singly owned mutating binary function with matching input types.
///
/// Represents a binary mutating function that takes two values of type `T` and
/// produces a value of type `R`, with single ownership semantics. Similar to
/// Java's `BiFunction<T, T, R>` but with mutable references.
///
/// # Examples
///
/// ```rust
/// use qubit_function::{BoxBinaryMutatingFunction, BiMutatingFunction};
///
/// let swap_and_sum: BoxBinaryMutatingFunction<i32, i32> = BoxBinaryMutatingFunction::new(|x: &mut i32, y: &mut i32| {
/// let temp = *x;
/// *x = *y;
/// *y = temp;
/// *x + *y
/// });
/// let mut a = 5;
/// let mut b = 10;
/// assert_eq!(swap_and_sum.apply(&mut a, &mut b), 15);
/// assert_eq!(a, 10);
/// assert_eq!(b, 5);
/// ```
pub type BoxBinaryMutatingFunction<T, R> = ;