How can I pass a slice as a variadic input?

Question

I have a function func more(... t). I\'m wondering if it\'s possible to use a slice to populate a list of arguments ... .

I\'m trying to s

Answer 1

A list of command arguments can be retrieved from the flag package Args() function. You can then pass this to a function using the variadic input style (func(input...))

From the Spec:

If f is variadic with final parameter type ...T, then within the function the argument is equivalent to a parameter of type []T. At each call of f, the argument passed to the final parameter is a new slice of type []T whose successive elements are the actual arguments, which all must be assignable to the type T.

Example:

package main

import "fmt"

func echo(strings ...string) {
    for _, s := range strings {
        fmt.Println(s)
    }
}

func main() {
    strings := []string{"a", "b", "c"}
    echo(strings...) // Treat input to function as variadic
}

See The Go spec for more details.

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