public bool Set(Func <T, T> factory, Action <T, T> postUpdateAction = null)
{
var old = _value == null ? default(T) : _value.Value;
var value = factory(old);
if (Equals(old, value))
{
return(false);
}
if (value != null && old != null && value.GetType().IsArray)
{
var a1 = (old as Array).Cast <object>().ToArray();
var a2 = (value as Array).Cast <object>().ToArray();
if (a1.Length == a2.Length)
{
var eq = !a1.Where((t, i) => !Equals(t, a2[i])).Any();
if (eq)
{
return(false);
}
}
}
_value = new BoxedLazySet(this, factory, value);
postUpdateAction?.Invoke(old, value);
return(true);
}
public T Get(Func <T, T> factory, Action <T, T> postUpdateAction = null)
{
if (_value == null)
{
_value = new BoxedLazy(this, factory, default(T));
}
return(_value.Value);
}
public void SetGetter(Func <T, T> valueFactory, T oldValue = default(T))
{
if (_value == null)
{
if (oldValue == null)
{
_value = new BoxedLazy(this, valueFactory, oldValue);
}
else
{
_value = new BoxedLazySet(this, valueFactory, oldValue);
}
}
}
