The first blog was containing just these 2 lines of SWIFT code.
let year = 2019
print (“Happy \(year)” .”)
Swift developers are normally familiar with Xcode or at least know the basics of Xcode. They will have no problems to run the code.
New to Swift programming, not knowing Xcode and curious to start, you can use some online tools or the REPL in the terminal app.
Some online compilers: