lancet/docs/xerror.md

Xerror

Package xerror implements helpers for errors.

Source:

• https://github.com/duke-git/lancet/blob/main/xerror/xerror.go

Usage:

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

Index

• Unwrap

Documentation

Unwrap

Unwrap if err is nil then it returns a valid value. If err is not nil, Unwrap panics with err.

Signature:

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

Example:

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
}