public static T GetRandomWhile <T>(
this IEnumerable <T> set,
out bool isFound,
Func <T, bool> predicate
)
{
var list = new System.Collections.Generic.List <T>(set);
while (list.IsNotEmpty())
{
var item = list.GetRandom();
if (predicate(item))
{
isFound = true;
return(item);
}
list.Remove(item);
}
isFound = false;
return(default(T));
}