Writing golang code with spacemacs

Since I use spacemacs, everything is easy.

As soon as I started editing a .go file, spacemacs offered to enable the go layer. (I could have easily done it myself, but it is always awesome when your editor "knows" and offers to help.)

After saving the .spacemacs and SPC f e R later (and I think I had to reopen the buffer, I don't remember) I had working syntax highlighting and "coding time error checking" (Thanks flycheck)

This is when I noticed the "hard" tabs. See [References]

I was surprised to find out that gofmt tool uses tabs (width=8) to format the go code. I quickly learnt that I should not try to enforce use of spaces, instead I could set my own tab width, the way I want.

So I added the following line to my .spacemacs

(add-hook 'go-mode-hook (lambda() (setq go-tab-width 4)))

As I neared successfully completing my first go program, I appreciated how complete the golang support is, in the spacemacs go layer.

As soon as I save the file, the gofmt command is fires up, and shows up any errors in the right hand side buffer (split window)

If there are no errors, the it formats the code as per the (go) standards.

There are more go layer functionalities like :

  • godoc : Shows up the documentation. Works offline as well. I checked ;)
  • go-import-add : I'm yet to realize the usefulness of this, but seems nice.

You can send a buffer or a region to the "go playground"

Most of these are available via M-x command or via the menu bar.

I may write part two of this, or just update this once I start using go seriously

Edit [Jan 2, 2017]

As I started writing more go code, I felt that I need auto completion, which is configured by default in the go layer, but was broken, because I had not installed the external dependencies [1]

Once I did that, auto-completion started working well.

I have not yet installed gomtalinter, mostly because I am too new to go and I think the errors shown by default are enough for me. In future, I might start using gomtalinter.

For default keyboard shortcuts configured for the go layer, see [2]

[1] Spacemacs go layer pre-requisites
[2] Spacemacs go commands


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