go-try

Table of Contents
  1. About
  2. Why go-try?
  3. Getting Started

  4. Roadmap
  5. Contributing
  6. License
  7. Contact

About

go-try is a package that allows you to use try/catch block in Go.

This project is still in its early stages, so any thoughts and feedback are very
welcome!

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Why go-try?

Many Go developers get tired of dealing with errors because there are too many
errors to handle one by one, which is intuitive and effective, but really
annoying.

I’ve been trying to find out if Go has an error handling method like
try/catch, I think that would probably be a lot easier, but unfortunately, I
couldn’t find any package that’s easy to use.

So I tried to make one myself, taking inspiration from the try/catch syntax,
then go-try was born!

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Getting Started

Installation

go get github.com/ez4o/go-try

Usage

Try(func () {
  ...
  ThrowOnError(ce)
  ...
  ThrowOnError(err)
  ...
}).Catch(func (ce CustomError) {
  ...
}).Catch(func (e error, st *StackTrace) {
  ...
  st.Print()
})

Functions

Name Description
Try() Takes func (), wrap your code here!
Catch() Takes func (any) or func (any, *StackTrace), and it will only accept the error type you have declared. You can accept second parameter, which is the stack trace begin from the last ThrowOnError().
ThrowOnError() Takes any. Will only throw an error when the parameter is not nil.
st.Print() If you have declared the second parameter st *StackTrace, you can print the stack trace using st.Print().

Example

Let’s say you want to fetch JSON from a url and unmarshal it, you can simply
write it like this:

import (
  "encoding/json"
  "fmt"
  "io/ioutil"
  "net/http"
    
  . "github.com/ez4o/go-try"
)

func main() {
  Try(func() {
    resp, err := http.Get("https://jsonplaceholder.typicode.com/posts")
    ThrowOnError(err)
    defer resp.Body.Close()
    
    b, err := ioutil.ReadAll(resp.Body)
    ThrowOnError(err)

    var data []map[string]interface{}
    err = json.Unmarshal(b, &data)
    ThrowOnError(err)

    fmt.Println(data)
  }).Catch(func(e error, st *StackTrace) {
    fmt.Println(e)
    st.Print()
  })
}

For more examples, head over to
https://github.com/ez4o/go-try/tree/main/.examples!

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Roadmap

  • Implement catching errors of different types.
  • Tests
  • CI

See the open issues for a full list of
proposed features (and known issues).

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Contributing

Contributions are what make the open source community such an amazing place to
learn, inspire, and create. Any contributions you make are greatly
appreciated
.

If you have a suggestion that would make this better, please fork the repo and
create a pull request. You can also simply open an issue with the tag
“enhancement”. Don’t forget to give the project a star! Thanks again!

  1. Fork the Project
  2. Create your Feature Branch (git checkout -b feat/amazing-feature)
  3. Commit your Changes with
    Conventional Commits
  4. Push to the Branch (git push origin feat/amazing-feature)
  5. Open a Pull Request

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License

Distributed under the MIT License. See
LICENSE for more
information.

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Contact

Author

Project Link

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GitHub

View Github