g是一个强耦合的模块，目的是为开发者在对频繁使用的类型/对象调用时提供便利。

import "github.com/gogf/gf/v2/frame/g"

type (
	Var = gvar.Var        // Var is a universal variable interface, like generics.
	Ctx = context.Context // Ctx is alias of frequently-used context.Context.
)

type (
	Map        = map[string]interface{}      // Map is alias of frequently-used map type map[string]interface{}.
	MapAnyAny  = map[interface{}]interface{} // MapAnyAny is alias of frequently-used map type map[interface{}]interface{}.
	MapAnyStr  = map[interface{}]string      // MapAnyStr is alias of frequently-used map type map[interface{}]string.
	MapAnyInt  = map[interface{}]int         // MapAnyInt is alias of frequently-used map type map[interface{}]int.
	MapStrAny  = map[string]interface{}      // MapStrAny is alias of frequently-used map type map[string]interface{}.
	MapStrStr  = map[string]string           // MapStrStr is alias of frequently-used map type map[string]string.
	MapStrInt  = map[string]int              // MapStrInt is alias of frequently-used map type map[string]int.
	MapIntAny  = map[int]interface{}         // MapIntAny is alias of frequently-used map type map[int]interface{}.
	MapIntStr  = map[int]string              // MapIntStr is alias of frequently-used map type map[int]string.
	MapIntInt  = map[int]int                 // MapIntInt is alias of frequently-used map type map[int]int.
	MapAnyBool = map[interface{}]bool        // MapAnyBool is alias of frequently-used map type map[interface{}]bool.
	MapStrBool = map[string]bool             // MapStrBool is alias of frequently-used map type map[string]bool.
	MapIntBool = map[int]bool                // MapIntBool is alias of frequently-used map type map[int]bool.
)

type (
	List        = []Map        // List is alias of frequently-used slice type []Map.
	ListAnyAny  = []MapAnyAny  // ListAnyAny is alias of frequently-used slice type []MapAnyAny.
	ListAnyStr  = []MapAnyStr  // ListAnyStr is alias of frequently-used slice type []MapAnyStr.
	ListAnyInt  = []MapAnyInt  // ListAnyInt is alias of frequently-used slice type []MapAnyInt.
	ListStrAny  = []MapStrAny  // ListStrAny is alias of frequently-used slice type []MapStrAny.
	ListStrStr  = []MapStrStr  // ListStrStr is alias of frequently-used slice type []MapStrStr.
	ListStrInt  = []MapStrInt  // ListStrInt is alias of frequently-used slice type []MapStrInt.
	ListIntAny  = []MapIntAny  // ListIntAny is alias of frequently-used slice type []MapIntAny.
	ListIntStr  = []MapIntStr  // ListIntStr is alias of frequently-used slice type []MapIntStr.
	ListIntInt  = []MapIntInt  // ListIntInt is alias of frequently-used slice type []MapIntInt.
	ListAnyBool = []MapAnyBool // ListAnyBool is alias of frequently-used slice type []MapAnyBool.
	ListStrBool = []MapStrBool // ListStrBool is alias of frequently-used slice type []MapStrBool.
	ListIntBool = []MapIntBool // ListIntBool is alias of frequently-used slice type []MapIntBool.
)

type (
	Slice    = []interface{} // Slice is alias of frequently-used slice type []interface{}.
	SliceAny = []interface{} // SliceAny is alias of frequently-used slice type []interface{}.
	SliceStr = []string      // SliceStr is alias of frequently-used slice type []string.
	SliceInt = []int         // SliceInt is alias of frequently-used slice type []int.
)

type (
	Array    = []interface{} // Array is alias of frequently-used slice type []interface{}.
	ArrayAny = []interface{} // ArrayAny is alias of frequently-used slice type []interface{}.
	ArrayStr = []string      // ArrayStr is alias of frequently-used slice type []string.
	ArrayInt = []int         // ArrayInt is alias of frequently-used slice type []int.
)

注意事项：在运行时阶段，每一次通过g模块获取单例对象时都会有内部全局锁机制来保证操作和数据的并发安全性，原理性上来讲在并发量大的场景下会存在锁竞争的情况，但绝大部分的业务场景下开发者均不需要太在意锁竞争带来的性能损耗。此外，开发者也可以通过将获取到的单例对象保存到特定的模块下的内部变量重复使用，以此避免运行时锁竞争情况。

package gclient
func NewClient() *ghttp.Client

func Validator() *gvalid.Validator

func Cfg(name ...string) *gcfg.Config

func Log(name ...string) *glog.Logger

func View(name ...string) *gview.View

func Server(name ...interface{}) *ghttp.Server

func TcpServer(name ...interface{}) *gtcp.Server

func UdpServer(name ...interface{}) *gudp.Server

func DB(name ...string) *gdb.Db

func Model(tables string, db ...string) *gdb.Model

func Redis(name ...string) *gredis.Redis

func Res(name ...string) *gres.Resource

func I18n(name ...string) *gi18n.Manager