range

1 import std.algorithm.comparison : equal;
2 import nxt.digestx.fnv : FNV;
3 import nxt.array_help : s;
4 
5 // construct small
6 alias X = SSOOpenHashSet!(K, FNV!(64, true));
7 static assert(X.sizeof == 24);
8 auto x = X.withCapacity(X.small.maxCapacity);
9 assert(x.isSmall);
10 assert(x.capacity == X.small.maxCapacity);
11 assert(x.length == 0);
12 
13 auto k42 = new K(42);
14 auto k43 = new K(43);
15 auto k44 = new K(44);
16 
17 // insert first into small
18 
19 assert(!x.contains(k42));
20 
21 assert(x.insert(k42) == x.InsertionStatus.added);
22 assert(x.contains(k42));
23 
24 assert(x.remove(k42));
25 assert(!x.contains(k42));
26 
27 assert(x.insert(k42) == x.InsertionStatus.added);
28 assert(x.contains(k42));
29 
30 assert(x.byElement.equal!((a, b) => a is b)([k42].s[]));
31 assert(x.isSmall);
32 assert(x.length == 1);
33 
34 // insert second into small
35 
36 assert(!x.contains(k43));
37 
38 assert(x.insert(k43) == x.InsertionStatus.added);
39 assert(x.contains(k42));
40 assert(x.contains(k43));
41 
42 assert(x.remove(k43));
43 assert(x.remove(k42));
44 assert(!x.contains(k43));
45 assert(!x.contains(k42));
46 
47 assert(x.insert(k43) == x.InsertionStatus.added);
48 assert(x.insert(k42) == x.InsertionStatus.added);
49 
50 assert(x.byElement.equal!((a, b) => a is b)([k43, k42].s[]));
51 assert(x.isSmall);
52 assert(x.length == 2);
53 
54 // expanding insert third into large
55 
56 assert(!x.contains(k44));
57 assert(x.insert(k44) == x.InsertionStatus.added);
58 // unordered store so equal doesn't work anymore
59 assert(x.contains(k42));
60 assert(x.contains(k43));
61 assert(x.contains(k44));
62 foreach (ref e; x.byElement)
63 {
64     static assert(is(typeof(e) == K));
65     assert(x.contains(e));
66 }
67 assert(x.isLarge);
68 assert(x.length == 3);
69 
70 // shrinking remove third into small
71 assert(x.remove(k44));
72 assert(!x.contains(k44));
73 assert(x.isSmall);
74 assert(x.length == 2);
75 assert(x.byElement.equal!((a, b) => a is b)([k43, k42].s[]));
76 // auto xr = x.byElement;
77 // assert(xr.front.value == 43);
78 // assert(xr.front is k43);
79 // xr.popFront();
80 // assert(xr.front.value == 42);
81 // assert(xr.front is k42);
82 // xr.popFront();
83 // assert(xr.empty);
84 
85 const cx = X.withCapacity(X.small.maxCapacity);
86 foreach (ref e; cx.byElement)
87 {
88     static assert(is(typeof(e) == K)); // head-const because of `is`-equality
89 }

import nxt.digestx.fnv : FNV;
alias X = SSOOpenHashSet!(K, FNV!(64, true));
import nxt.container_traits : mustAddGCRange;
static assert(mustAddGCRange!K);
static assert(mustAddGCRange!X);
auto x = X.withCapacity(3);
assert(x.isLarge);
assert(x.capacity == 4);    // nextPow2(3)
assert(x.length == 0);
assert(x.insert(new K(42)) == x.InsertionStatus.added);
assert(x.length == 1);
assert(x.insert(new K(43)) == x.InsertionStatus.added);
assert(x.length == 2);