public static IList <TObject> CopySpecificationToList <TObject>(IEnumerable <TObject> source, Predicate <TObject> predicate)
{
IList <TObject> copy = new List <TObject>();
CollectionHelper.ActionOnSpecification <TObject>(source, delegate(TObject t) { copy.Add(t); }, predicate);
return(copy);
}
/// <summary>
/// Find 从集合中选取符合条件的元素
/// </summary>
public static IList <TObject> Find <TObject>(IEnumerable <TObject> source, Predicate <TObject> predicate)
{
IList <TObject> list = new List <TObject>();
CollectionHelper.ActionOnSpecification(source, delegate(TObject ele) { list.Add(ele); }, predicate);
return(list);
}
/// <summary>
/// ConvertSpecification 将source中的符合predicate条件元素转换为TResult类型
/// </summary>
public static IList <TResult> ConvertSpecification <TObject, TResult>(IEnumerable <TObject> source, Func <TObject, TResult> converter, Predicate <TObject> predicate)
{
IList <TResult> list = new List <TResult>();
CollectionHelper.ActionOnSpecification <TObject>(source, delegate(TObject ele) { list.Add(converter(ele)); }, predicate);
return(list);
}
/// <summary>
/// ActionOnEach 对集合中的每个元素执行action。
/// </summary>
public static void ActionOnEach <TObject>(IEnumerable <TObject> collection, Action <TObject> action)
{
CollectionHelper.ActionOnSpecification <TObject>(collection, action, null);
}