qubit-function 0.12.0

Functional programming traits and Box/Rc/Arc adapters for Rust, inspired by Java functional interfaces
Documentation 
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/*******************************************************************************
 *
 *    Copyright (c) 2025 - 2026 Haixing Hu.
 *
 *    SPDX-License-Identifier: Apache-2.0
 *
 *    Licensed under the Apache License, Version 2.0.
 *
 ******************************************************************************/

use qubit_function::{
    BoxFunction,
    Function,
};

#[test]
fn test_closure_once_trait_observable_behavior() {
    let mut function = BoxFunction::new_with_name("smoke", |value: &i32| value + 1);
    assert_eq!(function.name(), Some("smoke"));
    function.set_name("renamed");
    assert_eq!(function.apply(&41), 42);
    assert_eq!(format!("{}", function), "BoxFunction(renamed)");
}