Array of functions to as argument in Golang

Question

How can I pass an array of functions to my main function Validate? I cant get the right syntax for this

package main

import (
    "fmt"
)

func upper(input string) string {

    return "hola"
}

func Validate(spec string, validations []func(string) string) {

    for err, exec := range validations {
        fmt.Println(exec(spec))
    }
}



func main() {
    Validate("Hola", []func{upper})
}

Regards!

Laode Muhammad Al Fatih · Accepted Answer · 2019-11-09 17:30:44Z

11

Here is correct example of using slice arguments. Before using slice literal you need to specify it's type.

package main

import "fmt"

func upper(input string) string {
    return "hola"
}

func Validate(spec string, validations []func(string) string) {
    for _, exec := range validations {
        fmt.Println(exec(spec))
    }
}

func main() {
    Validate("Hola", []func(string) string{upper})
}

edited Nov 9, 2019 at 17:30

Laode Muhammad Al Fatih

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answered Jun 18, 2018 at 15:54

Sergey Donskoy

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