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如何使用谓词实现匹配算法?

predicate generics c#

1

BobTheBuilder · 技术社区 · 17 年前

private static T FindInCollection<T>(ICollection<T> collection, Predicate<T> match)
{
    foreach (T item in collection)
    {
        //So how do I reference match to return the matching item?
    }
    return default(T);
}

ICollection<MyTestClass> receivedList = //Some list I've received from somewhere else
MyTestClass UsefulItem = FindInCollection<MyTestClass>(receivedList, i => i.SomeField = "TheMatchingData");

1 回复 | 直到 17 年前

1

7

Reed Copsey 17 年前

private static T FindInCollection<T>(ICollection<T> collection, Predicate<T> match)
{
    foreach (T item in collection)
    {
        if (match(item))
            return item;
    }
    return default(T);
}