public bool Add(T item)
{
var ret = _inner.Root_Add(item, true, _lineage, _eq, false);
if (ret == null)
{
return(false);
}
_inner = ret;
return(true);
}
/// <summary>
/// Adds a new item to the set, or does nothing if the item already exists.
/// </summary>
/// <param name="item">The item to add.</param>
/// <returns></returns>
public override ImmSet <T> Add(T item)
{
var res = Root.Root_Add(item, true, Lineage.Mutable(), EqualityComparer, false);
if (res == null)
{
return(this);
}
return(res.Wrap(EqualityComparer));
}
protected override ImmMap <TKey, TValue> Set(TKey k, TValue v, bool overwrite)
{
var r = _root.Root_Add(k, v, Lineage.Mutable(), _equality, overwrite);
if (r == null && !overwrite)
{
throw Errors.Key_exists(k);
}
if (r == null)
{
return(this);
}
return(r.WrapMap(_equality));
}
public bool Add(KeyValuePair <TKey, TValue> item)
{
_inner = _inner.Root_Add(item.Key, item.Value, _lineage, _equality, true) ?? _inner;
return(true);
}