Function that returns a boolean

Getting Help
1

Hello,

I have a function that returns a boolean like this:

func isHere(email string){
var status bool
status = false

// do database verification
if something {
status = true
}

return status

}

…
now in main
Can I do this

func main(){
if isHere(“danny”){
// say danny is here
}else{
// say danny is not here
}
}

2

This needs to be

func isHere(email string) bool {

for it to actually return a bool. Apart from that, and that the body of the function can be a bit simplified depending on what you’re actually doing, yes. Assuming that isHere is also in package main, that is.

What did you try, and what happened when you did?

3

I’m trying to check if a user email exists on my database, so I can return a boolean and use the function like this (if isHere(“email”){// do stuffs}) in main…(guess that’s good practice)

The first time I tried it nothing happened, everything just halted with no response, so I assumed I could either not use it that way or I had some errors in my database code.

4

in this case you don’t need a status variable to return true or false. simply do

return true

or

return false

when is needed.

1 Like
5

Oh!!! Never knew, that’s cool. I’m coming from Java, I learnt to always do that.

HOwever, is it bad to do? Will the code still work? Peharps that’s why everything froze.

6

is nothing wrong to return a variable but this is a simple code and just no need. anyway, written like this, your code should work:

package main

var something bool

func isHere(email string) bool{
	var status bool
	status = false

	if something {
		status = true
	}
	return status
}


func main(){
	something=true // TOGGLE HERE TRUE AND FALSE
	if isHere("danny"){
		println("say danny is here")
	}else{
		println("say danny is not here")
	}
}
1 Like
7

Please can I do this ?

func Login(nick, pass string){

if is := IsSignedUp(nick);is == true && uPass := getPass(nick); uPass == pass{
    //set session and log user in
}else{
    // send failure message
}

}

On the if block

8

is not a good practice to merge many code lines in one. remember that golang is a simple language and your code must be readable.

try this

is := IsSignedUp(nick)
uPass := getPass(nick)
if is == true && uPass == pass{
}

tip: do not try to find other languages in golang. try to understand golang :wink:

2 Likes
9

That was useful, thanks a lot!!! :grinning:

10

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