How does one trap arithmetic overflow errors in Swift?

Question

This one is probably easy. We know that the operator &+ does modular arithmetic on integers (wraps around), while the operator + causes an erro

Answer 1

Looks like this has become a non-static method in Swift 5, addingReportingOverflow(_:).

So for example,

UInt8.max.addingReportingOverflow(1)

will return (partialValue: 0, overflow: true) See more on the Int manual page

And of course the normal arithmetic operators that start with & to allow overflow without returning overflow reports,

UInt8.max &+ 1

would return 0 as a UInt8