public static void Main()
{
DefaultEqualityComparer.SetProvider(DefaultEqualityComparer.System);
var mappy =
new HashMapBuilder <int, int> {
{ 1, 3 }, { 2, 4 }
}
.ToHashMap()
.Add(4, 5)
.Remove(2)
.Alter(1, (int?o) => o)
.Alter(1, (Microsoft.FSharp.Core.FSharpOption <int> o) => o)
.Alter(1, o => o)
.Map((k, v) => v * 3);
var delta123123 = mappy.ComputeDeltaTo(HashMap.Empty <int, int>());
var(sm, dm) = mappy.ApplyDelta(delta123123);
var smasdasd = HashMap.Empty <int, int>().ApplyDelta(ref delta123123);
var test =
new[] { 1, 2, 3, 4, 5 }
.ToHashSet()
.Map(i => i * 2)
.Filter(i => i % 2 == 0)
.Collect(i => HashSet.Single(i))
.Subtract(HashSet.Single(2))
.Alter(2, i => !i)
.MapNullable(i => i < 10 ? (int?)i : null);
var delta = test.ComputeDeltaTo(HashSet.Empty <int>()).Add(SetOperation <int> .Add(2131));
var sepp1 = test.ApplyDelta(ref delta);
var(newState, realDelta) = test.ApplyDelta(delta);
var changeableMap = new ChangeableHashMap <int, int>(new[] { (1, 2), (2, 3) });
