Create a JSON or slice array in Go

Question

I am not sure how to do this or word this. I have a variable that returns a string something like this:

unixCommands := exec.Command("ls", "/bin")
unixCommandsout, err := unixCommands.Output()
unixCommandsstring := string(unixCommandsout)
fmt.Printf(unixCommandsstring)

Output:

unicode_start
unicode_stop
unlink
usleep
vi
view
ypdomainname
zcat

I'm looking for creating a JSON array or whatever is easiest to get to this final output:

["unicode_start", "unicode_stop", "unlink", "usleep", "vi", "view", "ypdomainname", "zcat"]

armnotstrong · Accepted Answer · 2015-04-14 11:01:11Z

1

You can do that with package encoding/json:

outputSlice := strings.Split(unixCommandsstring,"\n")
js,_ := json.Marshal(outputSlice)
fmt.Print(string(js))

edited Apr 14, 2015 at 11:01

user1804599

answered Apr 14, 2015 at 3:27

armnotstrong

9,18518 gold badges70 silver badges137 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

rpkamp Over a year ago

of course in a production system you would actually capture the error from json.Marshal and do something with it :)

user1804599 Over a year ago

@ScallioXTX No, that's not needed here. json.Marshal never fails when passed a string slice.

Dave C Over a year ago

@rightfold, so you know exactly what the current and all future implementations of JSON marshalling will do for all possible inputs (e.g. unicode, invalid UTF-8, out of memory/buffer, etc, etc)?? It's far easier and better habit to check the error return whenever it is provided. If you think it will never fail then maybe use panic (but in this case of course the os.Exec can fail so the surrounding function will need to return errors anyway). Suggesting that errors can be ignored is foolhardy.

maerics Over a year ago

lol, this is a great comment thread "checking errors vs not" =P

Collectives™ on Stack Overflow

Create a JSON or slice array in Go

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related