(docs)Add package doc for package ext

huangjunwen · huangjunwen · commit 568b2c773e58 · 2020-09-22T10:47:07.000+08:00
diff --git a/ext/ext.go b/ext/ext.go
@@ -1,3 +1,4 @@
+// Package ext contains some useful extension operations.
 package ext
 
 import (

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,4 @@`
	`1`	`+// Package ext contains some useful extension operations.`
`1`	`2`	`package ext`
`2`	`3`
`3`	`4`	`import (`