How do I get the minimum value of two CGFloats in Swift?

Question

I have this code that should return the minimum value of two CGFloat values:

    var boundsSize:CGSize = scrollView.bounds.size
    var imageSize:CGSize = imageView.bounds.size

    var xScale:CGFloat = boundsSize.width / imageSize.width
    var yScale:CGFloat = boundsSize.height / imageSize.height

    var minScale:CGFloat = MIN(xScale, yScale) // this does not work

But MIN does not seem to have an equivalent in swift. So how do I do this?

Rashad · Accepted Answer · 2014-06-22T06:58:53.860

7

Try this:

var minScale = min(xScale, yScale)

min is already in swift. Hope this helps.. :)

min is variadic function. Its reset parameter is a variadic parameter. From developer site:

A variadic parameter accepts zero or more values of a specified type. You use a variadic parameter to specify that the parameter can be passed a varying number of input values when the function is called. Write variadic parameters by inserting three period characters (...) after the parameter’s type name.

For more info. See this.

edited Jun 22 '14 at 06:58

answered Jun 22 '14 at 06:47

Rashad

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the function signature is `func min(x: T, y: T, rest: T...) -> T` - what is the rest parameter? – Amit Erandole Jun 22 '14 at 06:48
1

It's a variadic function, you don't need to pass anything there. – Rashad Jun 22 '14 at 06:51

score 4 · Answer 2 · answered Jun 22 '14 at 06:45

4

The function in Swift is min, so:

var minScale = min(xScale, yScale)

answered Jun 22 '14 at 06:45

fqdn

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How do I get the minimum value of two CGFloats in Swift?

2 Answers2