Vtyjkyuk

Is it possible to set, for instance, .isHidden to multiple buttons at once, instead of:

button1.isHidden = true 
button2.isHidden = true 
button3.isHidden = true 

Something like: button1, button2, button3.isHidden = true.

Put them in an array and iterate through the array.

[button1, button2, button3].forEach 
 $0.isHidden = true

In addition to @ukim's answer, you can use an Outlet Collection.

In you storyboard, drag from your first button and select Outlet Collection rather than Outlet as you would normally do.

Which gives you…

@IBOutlet var buttons: [UIButton]!

Then connect all your other buttons to the same @IBOutlet

You can then say

buttons.forEach 
 $0.isHidden = true

You can also create Array extension. It also make more sense to constraint element type to UIButton, such that you can't call it for any other type of array.

Something like this,

extension Array where Element == UIView 

 func show() 
 forEach $0.isHidden = false 
 

 func hide() 
 forEach $0.isHidden = true 
 

Then, using it like so,

[button1, button2, button3].hide() // hide buttons
[button1, button2, button3].show() // show 

Extending collection makes more sense in this case, which gives more flexibility as the hide / show could be used with ArraySlices then.

Here is how you would do this,

extension Collection where Element: UIView 
 func show() 
 forEach $0.isHidden = false 
 

 func hide() 
 forEach $0.isHidden = true 
 

 func toggleVisibility() 
 forEach $0.isHidden = !$0.isHidden 
 

And with this you can do some cool thing like,

// hide all but not first
myArrayOfButtons.dropFirst().hide()

// hide buttons in indexes 0 to 1
myArrayOfButtons[0 ... 1].hide()

// show all buttons but not last
myArrayOfButtons.dropLast().show()

// hide first 2 buttons
myArrayOfButtons.prefix(2).hide()

// show last button
myArrayOfButtons.suffix(1).show()

// toggle visibility of first 2 
myArrayOfButtons.prefix(2).toggleVisibility()

You could also create an IBOutlet collection

@IBOutlet var multiButtons: [UIButton]!

Do do this: when you control-drag from the button to the code, select Outlet collection ; then control drag other buttons to this outlet collection.

Now, you can

for button in multiButtons 
 button.isHidden = true