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You have completed Go Language Overview!
You have completed Go Language Overview!
Preview
Run the "go fmt" tool on your source code files, and it will fix indentation, fix spacing issues, align comments, and more, automatically.
-
go fmt- Fixes indentation
- Fixes spacing issues
- Aligns comments
- And more
Before:
package main
import ("fmt")
func main() {
var myInt int
var myString string
var myBool bool
fmt.Println("myInt", myInt) // 0
fmt.Println("myString", myString) //""
fmt.Println("myBool",myBool) //false
}
After:
package main
import (
"fmt"
)
func main() {
var myInt int
var myString string
var myBool bool
fmt.Println("myInt", myInt) // 0
fmt.Println("myString", myString) //""
fmt.Println("myBool", myBool) //false
}
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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
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