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iafan / goplayspace

Advanced Go Playground frontend written in Go, with syntax highlighting, turtle graphics mode, and more
https://goplay.space
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frontend go golang gopherjs react vecty

readme

About Go Play Space

Go Play Space is an experimental alternative Go Playground frontend that is built in Go itself (using GopherJS), a Go→JavaScript transpiler, and Vecty, a React-like frontend library for GopherJS).

Try it: https://goplay.space

demo

Go Play Space supports the Turtle graphics mode to help visualize algorithms and make learning experience more fun.

draw mode demo

Features

  1. Syntax highlighting, auto-closing braces and quotes, proper undo/redo, auto indentation
  2. Smart help lookup: double-click on e.g. package keyword or Println function name in source code, and you will see the relevant help topic.
  3. Live syntax error checking
  4. Error line highlighting (both for syntax errors and for errors returned from the compiler)
  5. Ability to highlight lines and blocks of code (like on Github, but better!) — just click on the line numbers. Use Shift and Ctrl to modify the selection
  6. Keyboard shortcuts (see button captions)
  7. Support for several UI themes
  8. Support for Fira Code font (either the one installed in your system or a webfont)
  9. go imports is always run before running your code, so you don't usually have to worry about imports at all

Code execution is proxied to the official Go Playground, so your programs will work the same. Shared snippets are also stored on golang.org servers.

Running Locally

Download the package:

$ go get -u github.com/iafan/goplayspace/...

Compile both client-side code and server binary:

$ cd $GOPATH/src/github.com/iafan/goplayspace/bin
$ ./build-client && ./build-server

Run the server:

$ ./goplayspace

Then open http://localhost:8080/ in your browser.

Troubleshooting

If you have trouble compiling the client, please make sure you have the latest version of GopherJS installed by running go get -u github.com/gopherjs/gopherjs (see #6)

Feedback

Feel free to provide your feedback, suggestions or bug reports here in the bug tracker, or message @afan in the Gophers Slack channel.

Credits

Gopher vector logo by Takuya Ueda, licensed under the Creative Commons 3.0 Attributions license and based on original artwork by Renee French. See https://github.com/golang-samples/gopher-vector

Go proverbs: Rob Pike