dkh.array source code

1 module dkh.array;
2 
3 /// Make static array literal
4 T[N] fixed(T, size_t N)(T[N] a) {return a;}
5 
6 ///
7 unittest {
8     auto a = [[1, 2].fixed];
9     assert(is(typeof(a) == int[2][]));
10 }
11 
12 /// Unstable
13 int[2] findFirst2D(T, U)(in T mp, in U c) {
14     import std.conv : to;
15     int R = mp.length.to!int;
16     int C = mp[0].length.to!int;
17     foreach (i; 0..R) {
18         foreach (j; 0..C) {
19             if (mp[i][j] == c) return [i, j];
20         }
21     }
22     assert(false);
23 }
24 
25 ///
26 unittest {
27     string[] mp = [
28         "s..",
29         "...",
30         "#g#"];
31     assert(mp.findFirst2D('s') == [0, 0]);
32     assert(mp.findFirst2D('g') == [2, 1]);
33 }
34 
35 /// Unstable
36 auto ref at2D(T, U)(ref T mp, in U idx) {
37     return mp[idx[0]][idx[1]];
38 }
39 
40 ///
41 unittest {
42     string[] mp = [
43         "s..",
44         "...",
45         "#g#"];
46     assert(mp.at2D([0, 0]) == 's');
47     assert(mp.at2D([2, 1]) == 'g');
48 }