/// <summary>
/// Removes non-matching nodes and replaces them with <see cref="FilterNode{TFilter}.True"/>
/// </summary>
/// <typeparam name="TFilter"></typeparam>
/// <param name="filter"></param>
/// <param name="predicate"></param>
/// <returns></returns>
public static IFilterNode <TFilter> Where <TFilter>(
this IFilterNode <TFilter> filter,
Func <TFilter, bool> predicate)
where TFilter : IFilter
=> filter.Bind <TFilter>(leafFilter =>
{
if (predicate(leafFilter))
{
return(leafFilter.ToLeafFilterNode());
}
return(FilterNode <TFilter> .True);
});
