qubit-function 0.16.0

Functional programming traits and Box/Rc/Arc adapters for Rust, inspired by Java functional interfaces
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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 `BoxUnaryOperator` public type.

use super::BoxTransformer;

// ============================================================================
// Type Aliases for UnaryOperator (Transformer<T, T>)
// ============================================================================

/// A singly owned unary transformation closed over one type.
///
/// Represents a unary operator that transforms a value of type `T` to another
/// value of the same type `T`, with single ownership semantics. Equivalent to
/// Java's `UnaryOperator<T>`.
///
/// # Examples
///
/// ```rust
/// use qubit_function::{BoxUnaryOperator, Transformer};
///
/// let increment: BoxUnaryOperator<i32> = BoxUnaryOperator::new(|x| x + 1);
/// assert_eq!(increment.apply(41), 42);
/// ```
pub type BoxUnaryOperator<T> = BoxTransformer<T, T>;