On Tue, May 25, 2021 at 10:14 AM Delta Echo <deltaecho...@gmail.com> wrote:
> What does the parameter name `a` stands for in fmt package's functions?
> func Printf(format string, a ...interface{}) (n int, err error)
>
> Is it argument?
It's a parameter name. ...interface{} is the type of that argument,
variadic in this case indicated by the ellipsis. Argument is for
example the expression 42 in fmt.Printf("%i\n", 42).
Within the body of Printf the 'a' parameter is typed as []interface{}.
These questions are best answered by checking the language
specification: https://golang.org/ref/spec#Function_types and
https://golang.org/ref/spec#Passing_arguments_to_..._parameters
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