How do I create a bold UIFont from a regular UIFont?

Question

If I have a UIFont object, is it possible to convert it to bold? I don\'t know the font name, I just have a UIFont object. What I want is a function like

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Answer 1

This is a very old thread but someone may be interested in how to do this in Swift 5 nowadays.

Easy like this:

var font: UIFont = UIFont.systemFont(ofSize: 18)
if let newDescriptor = font.fontDescriptor.withSymbolicTraits(.traitBold) {
    font = UIFont(descriptor: newDescriptor, size: font.pointSize)
}