Mod: add bytes introduction

README.md

@@ -2,6 +2,14 @@
 
 A go sdk for [Apache Dubbo-go](github.com/apache/dubbo-go).
 
+## bytes
+
+* BytesBufferPool
+> bytes.Buffer pool
+
+* SlicePool
+> slice pool
+
 ## sync
 
 > deadlock
@@ -10,9 +18,8 @@ Copy from [go-deadlock](https://github.com/sasha-s/go-deadlock) and add EnableDe
 
 ## strings
 
-> string <--> slice
-
-Convert from string to slice or from slice to string asap.
+* IsNil 
+> check a var is nil or not.
 
 ## time
 

strings/slice.go

-// Copyright 2016 ~ 2018 AlexStocks(https://github.com/AlexStocks).
-// All rights reserved.  Use of this source code is
-// governed by Apache License 2.0.
-
-package gxstrings
-
-import (
-	"reflect"
-	"unsafe"
-)
-
-// returns &s[0], which is not allowed in go
-func StringPointer(s string) unsafe.Pointer {
-	p := (*reflect.StringHeader)(unsafe.Pointer(&s))
-	return unsafe.Pointer(p.Data)
-}
-
-// returns &b[0], which is not allowed in go
-func BytePointer(b []byte) unsafe.Pointer {
-	p := (*reflect.SliceHeader)(unsafe.Pointer(&b))
-	return unsafe.Pointer(p.Data)
-}