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swiftinfinity

INFINITY in Swift Lang

According to Apple's documentation, Swift doesn't support preprocessor directives. In C/Objective-c the "INFINITY" definition is very useful for some checks. So, How do I get a number that never is less that another?

Solution

  • There is already buildin infinity and also a check function. And you could also directly compare them with <.

    var infinity = Double.infinity
var isInfinite = infinity.isInfinite
var someDouble = 234432.0
if someDouble < infinity {
    println("Less than")
} else {
    println("Small than")
}
// And the answer is Less than.