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GitHub - PumpkinSeed/errors: Simple and efficient error package
Simple and efficient error package . Contribute to PumpkinSeed/errors development by creating an account on GitHub.
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GitHub - PumpkinSeed/errors: Simple and efficient error package

GitHub - PumpkinSeed/errors: Simple and efficient error package

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Errors

Simple error package for Go with minimal allocation and high performance. Optimized to keep error on function stack.

Motivation

I found out that the available error packages too complex for the simple purpose or not achieve the simple goal.

Purpose & Goal

Maintain an error chain (some kind of list of errors), and let the system to check whether the error's type caused the actual error or not.

Usage

package main

import (
    stderrors "errors"

    "github.com/PumpkinSeed/errors"
)

var ErrGlobal = errors.New("global err")
var ErrGlobal2 = errors.New("global err 2")
var ErrNotUsed = errors.New("not used err")

func main() {
    err := f3()
    
    stderrors.Is(err, ErrGlobal) // true
    stderrors.Is(err, ErrGlobal2) // true
    stderrors.Is(err, ErrNotUsed) // false

    println(err.Error()) // "global err 2: global err: string1"
}

func f1() error {
    return errors.New("string1")
}

func f2() error {
    return errors.Wrap(f1(), ErrGlobal)
}

func f3() error {
    return errors.Wrap(f2(), ErrGlobal2)
}

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