com.bestvike.linq.enumerable

类 GroupBy

java.lang.Object

com.bestvike.linq.enumerable.GroupBy

public final class GroupBy
extends java.lang.Object

Created by 许崇雷 on 2018-05-10.

方法概要

限定符和类型	方法和说明
static <TSource,TKey> IEnumerable<IGrouping<TKey,TSource>>	groupBy(IEnumerable<TSource> source, Func1<TSource,TKey> keySelector)
static <TSource,TKey,TElement> IEnumerable<IGrouping<TKey,TElement>>	groupBy(IEnumerable<TSource> source, Func1<TSource,TKey> keySelector, Func1<TSource,TElement> elementSelector)
static <TSource,TKey,TElement,TResult> IEnumerable<TResult>	groupBy(IEnumerable<TSource> source, Func1<TSource,TKey> keySelector, Func1<TSource,TElement> elementSelector, Func2<TKey,IEnumerable<TElement>,TResult> resultSelector)
static <TSource,TKey,TElement,TResult> IEnumerable<TResult>	groupBy(IEnumerable<TSource> source, Func1<TSource,TKey> keySelector, Func1<TSource,TElement> elementSelector, Func2<TKey,IEnumerable<TElement>,TResult> resultSelector, IEqualityComparer<TKey> comparer)
static <TSource,TKey,TElement> IEnumerable<IGrouping<TKey,TElement>>	groupBy(IEnumerable<TSource> source, Func1<TSource,TKey> keySelector, Func1<TSource,TElement> elementSelector, IEqualityComparer<TKey> comparer)
static <TSource,TKey,TResult> IEnumerable<TResult>	groupBy(IEnumerable<TSource> source, Func1<TSource,TKey> keySelector, Func2<TKey,IEnumerable<TSource>,TResult> resultSelector)
static <TSource,TKey,TResult> IEnumerable<TResult>	groupBy(IEnumerable<TSource> source, Func1<TSource,TKey> keySelector, Func2<TKey,IEnumerable<TSource>,TResult> resultSelector, IEqualityComparer<TKey> comparer)
static <TSource,TKey> IEnumerable<IGrouping<TKey,TSource>>	groupBy(IEnumerable<TSource> source, Func1<TSource,TKey> keySelector, IEqualityComparer<TKey> comparer)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

groupBy

public static <TSource,TKey> IEnumerable<IGrouping<TKey,TSource>> groupBy(IEnumerable<TSource> source,
                                                                          Func1<TSource,TKey> keySelector)

groupBy

public static <TSource,TKey> IEnumerable<IGrouping<TKey,TSource>> groupBy(IEnumerable<TSource> source,
                                                                          Func1<TSource,TKey> keySelector,
                                                                          IEqualityComparer<TKey> comparer)

groupBy

public static <TSource,TKey,TElement> IEnumerable<IGrouping<TKey,TElement>> groupBy(IEnumerable<TSource> source,
                                                                                    Func1<TSource,TKey> keySelector,
                                                                                    Func1<TSource,TElement> elementSelector)

groupBy

public static <TSource,TKey,TElement> IEnumerable<IGrouping<TKey,TElement>> groupBy(IEnumerable<TSource> source,
                                                                                    Func1<TSource,TKey> keySelector,
                                                                                    Func1<TSource,TElement> elementSelector,
                                                                                    IEqualityComparer<TKey> comparer)

groupBy

public static <TSource,TKey,TResult> IEnumerable<TResult> groupBy(IEnumerable<TSource> source,
                                                                  Func1<TSource,TKey> keySelector,
                                                                  Func2<TKey,IEnumerable<TSource>,TResult> resultSelector)

groupBy

public static <TSource,TKey,TResult> IEnumerable<TResult> groupBy(IEnumerable<TSource> source,
                                                                  Func1<TSource,TKey> keySelector,
                                                                  Func2<TKey,IEnumerable<TSource>,TResult> resultSelector,
                                                                  IEqualityComparer<TKey> comparer)

groupBy

public static <TSource,TKey,TElement,TResult> IEnumerable<TResult> groupBy(IEnumerable<TSource> source,
                                                                           Func1<TSource,TKey> keySelector,
                                                                           Func1<TSource,TElement> elementSelector,
                                                                           Func2<TKey,IEnumerable<TElement>,TResult> resultSelector)

groupBy

public static <TSource,TKey,TElement,TResult> IEnumerable<TResult> groupBy(IEnumerable<TSource> source,
                                                                           Func1<TSource,TKey> keySelector,
                                                                           Func1<TSource,TElement> elementSelector,
                                                                           Func2<TKey,IEnumerable<TElement>,TResult> resultSelector,
                                                                           IEqualityComparer<TKey> comparer)