feat(Go-Tool)：2020/11/12:新增linq包使用示例(未完成)

util/linqUse/FuncSet.go

@@ -0,0 +1,41 @@
+/*
+ *  @Author : huangzj
+ *  @Time : 2020/11/12 14:43
+ *  @Description：测试方法集合
+ */
+
+package linqUse
+
+import "time"
+
+//书籍发布时间是否早于--.--.--
+var PublishTimeBeforeFunc = func(thisBook interface{}) bool {
+	if thisBook.(Book).PublishTime.Before(time.Date(2020, 1, 1, 0, 0, 0, 0, time.Local)) {
+		return true
+	}
+	return false
+}
+
+//书籍发布时间是否晚于--.--.--
+var PublishTimeAfterFunc = func(thisBook interface{}) bool {
+	if thisBook.(Book).PublishTime.After(time.Date(2018, 1, 1, 0, 0, 0, 0, time.Local)) {
+		return true
+	}
+	return false
+}
+
+//书籍发布时间是否晚于--.--.--
+var PublishTimeAfterFunc2 = func(thisBook interface{}) bool {
+	if thisBook.(Book).PublishTime.After(time.Date(2021, 1, 1, 0, 0, 0, 0, time.Local)) {
+		return true
+	}
+	return false
+}
+
+//自定义聚合操作方法
+var AggregateFunc = func(first interface{}, second interface{}) interface{} {
+	if first.(Book).PublishTime.Before(second.(*Book).PublishTime) {
+		return first
+	}
+	return second
+}