bi_transformer_demo/
bi_transformer_demo.rs

1/*******************************************************************************
2 *
3 *    Copyright (c) 2025.
4 *    3-Prism Co. Ltd.
5 *
6 *    All rights reserved.
7 *
8 ******************************************************************************/
9
10use prism3_function::{ArcBiTransformer, BiTransformer, BoxBiTransformer, RcBiTransformer};
11
12fn main() {
13    println!("=== BiTransformer Demo ===\n");
14
15    // 1. BoxBiTransformer - Single ownership
16    println!("1. BoxBiTransformer - Single ownership");
17    let add = BoxBiTransformer::new(|x: i32, y: i32| x + y);
18    println!("   add.apply(20, 22) = {}", add.apply(20, 22));
19
20    let multiply = BoxBiTransformer::new(|x: i32, y: i32| x * y);
21    println!("   multiply.apply(6, 7) = {}", multiply.apply(6, 7));
22
23    // Constant bi-transformer
24    let constant = BoxBiTransformer::constant("hello");
25    println!("   constant.apply(1, 2) = {}", constant.apply(1, 2));
26    println!();
27
28    // 2. ArcBiTransformer - Thread-safe, cloneable
29    println!("2. ArcBiTransformer - Thread-safe, cloneable");
30    let arc_add = ArcBiTransformer::new(|x: i32, y: i32| x + y);
31    let arc_add_clone = arc_add.clone();
32
33    println!("   arc_add.apply(10, 15) = {}", arc_add.apply(10, 15));
34    println!(
35        "   arc_add_clone.apply(5, 8) = {}",
36        arc_add_clone.apply(5, 8)
37    );
38    println!();
39
40    // 3. RcBiTransformer - Single-threaded, cloneable
41    println!("3. RcBiTransformer - Single-threaded, cloneable");
42    let rc_multiply = RcBiTransformer::new(|x: i32, y: i32| x * y);
43    let rc_multiply_clone = rc_multiply.clone();
44
45    println!("   rc_multiply.apply(3, 4) = {}", rc_multiply.apply(3, 4));
46    println!(
47        "   rc_multiply_clone.apply(5, 6) = {}",
48        rc_multiply_clone.apply(5, 6)
49    );
50    println!();
51
52    // 4. Conditional BiTransformer
53    println!("4. Conditional BiTransformer");
54    let add_if_positive = BoxBiTransformer::new(|x: i32, y: i32| x + y);
55    let multiply_otherwise = BoxBiTransformer::new(|x: i32, y: i32| x * y);
56    let conditional = add_if_positive
57        .when(|x: &i32, y: &i32| *x > 0 && *y > 0)
58        .or_else(multiply_otherwise);
59
60    println!(
61        "   conditional.apply(5, 3) = {} (both positive, add)",
62        conditional.apply(5, 3)
63    );
64    println!(
65        "   conditional.apply(-5, 3) = {} (not both positive, multiply)",
66        conditional.apply(-5, 3)
67    );
68    println!();
69
70    // 5. Working with different types
71    println!("5. Working with different types");
72    let format =
73        BoxBiTransformer::new(|name: String, age: i32| format!("{} is {} years old", name, age));
74    println!(
75        "   format.apply(\"Alice\", 30) = {}",
76        format.apply("Alice".to_string(), 30)
77    );
78    println!();
79
80    // 6. Closure as BiTransformer
81    println!("6. Closure as BiTransformer");
82    let subtract = |x: i32, y: i32| x - y;
83    println!("   subtract.apply(42, 10) = {}", subtract.apply(42, 10));
84    println!();
85
86    // 7. Conversion between types
87    println!("7. Conversion between types");
88    let box_add = BoxBiTransformer::new(|x: i32, y: i32| x + y);
89    let rc_add = box_add.into_rc();
90    println!("   Converted BoxBiTransformer to RcBiTransformer");
91    println!("   rc_add.apply(7, 8) = {}", rc_add.apply(7, 8));
92    println!();
93
94    // 8. Safe division with Option
95    println!("8. Safe division with Option");
96    let safe_divide =
97        BoxBiTransformer::new(|x: i32, y: i32| if y == 0 { None } else { Some(x / y) });
98    println!(
99        "   safe_divide.apply(42, 2) = {:?}",
100        safe_divide.apply(42, 2)
101    );
102    println!(
103        "   safe_divide.apply(42, 0) = {:?}",
104        safe_divide.apply(42, 0)
105    );
106    println!();
107
108    // 9. String concatenation
109    println!("9. String concatenation");
110    let concat = BoxBiTransformer::new(|s1: String, s2: String| format!("{}{}", s1, s2));
111    println!(
112        "   concat.apply(\"Hello\", \"World\") = {}",
113        concat.apply("Hello".to_string(), "World".to_string())
114    );
115    println!();
116
117    println!("=== Demo Complete ===");
118}
bi_transformer_demo/bi_transformer_demo.rs

bi_transformer_demo/
bi_transformer_demo.rs
