static IEnumerable <T> Filter <T>(IEnumerable <T> items
, PredicateGenericDelegate <T> predicate)
{
var ret = new List <T>();
foreach (var item in items)
{
if (predicate(item))
{
ret.Add(item);
}
}
return(ret);
}
//修改数据过滤方法
static IEnumerable <T> Filter <T>(IEnumerable <T> list,
PredicateGenericDelegate <T> predicate)
{
//找出所有的偶数，放到List<int>集合中
var result = new List <T>();
foreach (var num in list)
{
if (predicate(num))
{
result.Add(num);
}
}
return(result);
}