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docs: add xerror package doc

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dudaodong
2022-03-16 18:21:30 +08:00
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README.md
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@@ -390,31 +390,14 @@ import "github.com/duke-git/lancet/validator"
- [IsStrongPassword](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsStrongPassword)
- [IsUrl](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsUrl)
- [IsWeakPassword](https://github.com/duke-git/lancet/blob/main/docs/validator.md#IsWeakPassword)
### 14. error helpers
- Contain functions to handle errors
- Usage: import "github.com/duke-git/lancet/xerror"
### 14. xerror
xerror package implements helpers for errors.
```go
package main
import (
"fmt"
"io/ioutil"
"log"
"github.com/duke-git/lancet/errors"
)
func main() {
x := Unwrap(strconv.Atoi("42")) // Unwrap if err is nil then it returns a valid value otherwise it panics
}
```
- Function list:
```go
Unwrap[T any](val T, err error) //if err is nil then it returns a valid value otherwise it panics
import "github.com/duke-git/lancet/xerror"
```
#### Function list:
- [Unwrap](https://github.com/duke-git/lancet/blob/main/docs/xerror.md#Unwrap)
## How to Contribute