feat(Go-Tool)：2020/11/23：修改项目案例(按照一定规则对一组数据进行排序分组)

vendor/github.com/ahmetb/go-linq/convert.go

@@ -0,0 +1,70 @@
+package linq
+
+type intConverter func(interface{}) int64
+
+func getIntConverter(data interface{}) intConverter {
+	switch data.(type) {
+	case (int):
+		return func(i interface{}) int64 {
+			return int64(i.(int))
+		}
+	case (int8):
+		return func(i interface{}) int64 {
+			return int64(i.(int8))
+		}
+	case (int16):
+		return func(i interface{}) int64 {
+			return int64(i.(int16))
+		}
+	case (int32):
+		return func(i interface{}) int64 {
+			return int64(i.(int32))
+		}
+	}
+
+	return func(i interface{}) int64 {
+		return i.(int64)
+	}
+}
+
+type uintConverter func(interface{}) uint64
+
+func getUIntConverter(data interface{}) uintConverter {
+	switch data.(type) {
+	case (uint):
+		return func(i interface{}) uint64 {
+			return uint64(i.(uint))
+		}
+	case (uint8):
+		return func(i interface{}) uint64 {
+			return uint64(i.(uint8))
+		}
+	case (uint16):
+		return func(i interface{}) uint64 {
+			return uint64(i.(uint16))
+		}
+	case (uint32):
+		return func(i interface{}) uint64 {
+			return uint64(i.(uint32))
+		}
+	}
+
+	return func(i interface{}) uint64 {
+		return i.(uint64)
+	}
+}
+
+type floatConverter func(interface{}) float64
+
+func getFloatConverter(data interface{}) floatConverter {
+	switch data.(type) {
+	case (float32):
+		return func(i interface{}) float64 {
+			return float64(i.(float32))
+		}
+	}
+
+	return func(i interface{}) float64 {
+		return i.(float64)
+	}
+}