(R)Go Error

Like Rust's Result type, but for Go.

Usage

package main

import (
    . "github.com/abersheeran/rgo-error"
)

func normal_error() (string, error) {
    value, err := redis.Get(ctx, "key").Result() 
    if err != nil {
        return "", err
    }
    return value, nil
}

// Use `Result[T]` replace (T, error)

func use_result() Result[string] {
    return AsResult[string](redis.Get(ctx, "key").Result())
}

Result method:

• func (r Result[T]) IsOk() bool
• func (r Result[T]) IsErr() bool
• func (r Result[T]) Error() error
• func (o Result[T]) Unwrap() T: Returns a valid value; panic if err is present

You can use Ok and Err in your function replace AsResult

func ok_or_err() Result[string] {
    return Ok[string]("hello world")
    // return Err[string](error)
}

func ok_or_err_use_res() (res Result[string]) {
    return res.Ok("hello world")
    // return res.Err(error)
}