Golang separating items with comma in template

Question

I am trying to display a list of comma separated values, and don\'t want to display a comma after the last item (or the only item if there is only one).

My code so far:<

Answer 1

If you are willing to use an external library, it seems like sprig library has a "join" function (see here):

join

Join a list of strings into a single string, with the given separator.

list "hello" "world" | join "_"

The above will produce hello_world

join will try to convert non-strings to a string value:

list 1 2 3 | join "+"

The above will produce 1+2+3