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Matthew Chana
1,063 PointsWhy doesn't the 'culprit' constant in the if let conditional require a "==" (is equal to)?
So the corret code is: if let culprit = findApt("101") { println("Apt Found: (culprit)") }
but I intuitively thought it would be: if let culprit == findApt("101") { println("Apt Found: (culprit)") }
3 Answers
Stephen McMillan
iOS Development with Swift Techdegree Graduate 33,994 Points== isn't required because we are assigning 'let culprit' to the return value of the function findApt() . The IF statement is there to make sure we are not trying unwrap(!) an optional that is nil.
Matthew Chana
1,063 PointsCool and thanks, so, because of this, this can be considered different than a stand-alone if then conditional?
Ed Williams
2,969 PointsThey are both IF conditionals, but this one is different in the way that it is checking if the constant is assigned a value, whereas with '==' we are checking if the two variables on either side of the comparison operator are equal.
Jorge Escalante
Front End Web Development Techdegree Student 2,080 PointsAnd if the findApt function is equal to nil the if statament is taken as false ? I'm still confused :\