Convert NSInteger to NSUInteger?

Question

I am trying to convert a NSInteger to a NSUInteger and I googled it and found no real answer. How would I do this?

Answer 1

If you are certain that your NSInteger is greater than or equal to zero, you simply cast it as NSUInteger. You should not be casting to NSUInteger if your NSInteger represents a negative number, as it may lead to inconsistency.

NSInteger signedInteger = -30;
NSUInteger unsignedInteger = (NSUInteger)signedInteger;

results in

if (unsignedInteger == signedInteger) {
    // is TRUE
}
if (signedInteger == 4294967266) {
    // is FALSE
}
if (signedInteger == -30) {
    // is TRUE
}
if (unsignedInteger == 4294967266) {
    // is TRUE
}
if (unsignedInteger == -30) {
    // is TRUE
}