Hacker News Reader

Comment by gizdan | Hacker News Reader

Off-topic: I know one of you smart folks here at HN have figured out how to do something similar to go playground in the terminal that makes it easy to write a script, and on safe it go fmt's + imports, and then runs it. Something with vim + tmux or whatever. If this is you, I'd love it if you could share it!

View on HN

I use a script for this. Something like:

    #!/usr/bin/env bash
    {
      find . -name "*.go" -print
      echo package.json
    } | entr bash -c '
    set -euxo pipefail
    clear
    go fmt
    clear
    go build
    :
    '

You can make it fancier like adding cd into "${BASH_SOURCE[0]%/*}", etc

I made this extension for VS Code that also saves the outputs to markdown, so you can save it straight to blog posts: https://marketplace.visualstudio.com/items?itemName=gobookde...

Each cell runs in a 0.3 secs on Linux, but 3 seconds + on Windows.

If you want just straight terminal check out Gomacro, that's a interpreter that runs really fast, didn't find any differences to compiled Go.

There's an REPL called yaegi, but it's pretty primitive (no autocompletion etc.. when I tried).

There seems to be another interpreter that seems to be able to provide some autocomplete using some other third party tool, but it seemed to run from beginning every time (same effect as `go run`) and I havent tried it.

The issue with these REPLs is for whatever reason it doesn't come close to the experience of say the python REPL. I have been hoping for the Go devs to build a REPL into the tooling but so far nothing has happened yet.

Yeah they are very primitive :(

Reply on news.ycombinator.com