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Go Language Overview

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The Go Formatting Tool

1:40 with Jay McGavren

Run the "go fmt" tool on your source code files, and it will fix indentation, fix spacing issues, align comments, and more, automatically.

There's one last thing we should cover before we move onto the next stage, and 0:00
that's the Go-Format Tool. 0:03
Here we have a file whose formatting isn't ideal. 0:05
Things aren't indented correctly, there's odd spacing in the function calls and 0:08
things like that. 0:13
Let's try running the Go-Format tool on this file. 0:15
So, I'm gonna go down here to the console. 0:18
I'll type go, I'll run the format sub-command which is just fmt for short. 0:19
And I'll specify the name of the file that I want it to update. 0:26
So that's temp.go. 0:29
Run that and it'll print out the name of the file that it updated. 0:31
Then if I switch back up here to the editor, it will reload. 0:35
And you can see that even though the code looks much the same, 0:38
it's been substantially reformatted. 0:41
Our import statement's been cleaned up. 0:43
The indentation on everything has been fixed. 0:45
The comments are all aligned with each other and 0:48
even the spacing inside each line has been fixed. 0:51
This was done for us automatically by the Go Format tool. 0:54
It analyzed the structure of our source code and 0:57
then indented everything appropriately for us, and it makes other fixes as well. 0:59
Most people don't like all the formatting changes that Go Format makes. 1:04
But the point is that you don't have to argue about those changes. 1:08
Go Format is the standard for formatting Go code. 1:11
The standard format is easier to read once you're used to it. 1:14
And you don't have to manually make changes anymore to match some 1:17
arbitrary style guide. 1:21
You should run Go Format on all your Go code, especially if you're sharing it. 1:22
And it's easy to do, sublime text, then and all the other major text editors can 1:27
be set up to automatically run Go Format on files each time you save them. 1:31
So get in the habit, Go Format can save you a lot of time and trouble 1:36