1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
const std = @import("std");
const func = @import("funcz");
const c = func.combinators;
fn iter(n: i32) i32 {
return n + 1;
}
fn mul2(n: i32) i32 {
return n * 2;
}
fn add(n: i32, m: i32) i32 {
return n + m;
}
fn addThenMultiply(n: i32, m: i32, q: i32) i32 {
return (n + m) * q;
}
pub fn main() !void {
var gpa = std.heap.DebugAllocator(.{}){};
const allocator = gpa.allocator();
// Currying
const curriedAddResult = func.curry(add)(4)(5);
// Composition
const iterThenMul2 = func.compose(mul2, iter);
const composed = iterThenMul2(5);
// Map
var items = [_]i32{ 0, 1, 2, 3, 4 };
const itemsSlice: []i32 = items[0..items.len];
const buffer = try func.mapAlloc(allocator, iterThenMul2, itemsSlice);
std.debug.print("curry(add)(4)(5) = {any}\n", .{ curriedAddResult });
std.debug.print("compose(mul2, iter)(5) = {d}\n", .{ composed });
std.debug.print("mapAlloc(allocator, compose(mul2, iter), []i32{{ 0, 1, 2, 3, 4 }}) = {{ ", .{});
// func.map(func: anytype, items: anytype, buffer: anytype)
for(buffer) |item| {
std.debug.print("{d}, ", .{item});
}
std.debug.print("}}\n", .{});
std.debug.print("I(5) = {any}\n", .{c.I(5)});
std.debug.print("K(5)(7) = {any}\n", .{c.K(5)(7)});
std.debug.print("(S K S K)(5)(7) = {any}\n", .{((c.S(c.K)(c.S)(c.K))(mul2)(func.curry(add)(3)))(7)});
}
|
