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swift - Read and write a String from text file - Stack Overflow I need to read and write data to from a text file, but I haven't been able to figure out how I found this sample code in the Swift's iBook, but I still don't know how to write or read data import
What is the difference between `let` and `var` in Swift? 38 According to The Swift Programming Language Book Like C, Swift uses variables to store and to values by an identifying name Swift also makes extensive use of variables whose values cannot be changed These are known as constants, and are much more powerful than constants in C Both var and let are references, therefore let is a const reference
swift2 - Swift: guard let vs if let - Stack Overflow The Swift Docs on Control Flow explain the idea behind that: Using a guard statement for requirements improves the readability of your code, compared to doing the same check with an if statement