# Xerror

xerror 错误处理逻辑封装

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## 源码:

-   [https://github.com/duke-git/lancet/blob/main/xerror/xerror.go](https://github.com/duke-git/lancet/blob/main/xerror/xerror.go)

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## 用法:

```go
import (
    "github.com/duke-git/lancet/v2/xerror"
)
```

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## 目录

-   [Unwrap](#Unwrap)

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## 文档

### <span id="Unwrap">Unwrap</span>

<p>检查error, 如果err为nil则展开，则它返回一个有效值，如果err不是nil则Unwrap使用err发生panic。</p>

<b>函数签名:</b>

```go
func Unwrap[T any](val T, err error) T
```

<b>示例:</b>

```go
package main

import (
    "fmt"
    "github.com/duke-git/lancet/v2/xerror"
)

func main() {
    result1 := xerror.Unwrap(strconv.Atoi("42"))
    fmt.Println(result1)

    _, err := strconv.Atoi("4o2")
    defer func() {
        v := recover()
        result2 := reflect.DeepEqual(err.Error(), v.(*strconv.NumError).Error())
        fmt.Println(result2)
    }()

    xerror.Unwrap(strconv.Atoi("4o2"))

    // Output:
    // 42
    // true
}
```