Named string format variables?

[Nate Finch]

Is there a way to name string format variables, or otherwise correlate the format with the parameters by something other than their order in the source code?

For example:

bill := "Bill"

max := "Max"

s := "%person walks his dog %dog down the street."

fmt.Sprintf(s, person: bill, dog: max)

Result: 

"Bill walks his dog Max down the street."

The reason for this is that I want to be able to arbitrarily change the format string based on a configuration file, without having to worry about the order of the format parameters.

Is there a built-in way to do this, or am I stuck implementing something myself?

[minux]

I'd recommend text/template for this, just pass a map[string]string to tmpl.Execute.

[Nate Finch]

Yes!   Brilliant, thank you.  I hadn't thought about templates as more complex string formatting, but that's perfect.