The Swift Programming Language is the authoritative reference for Swift, offering a You can also download the latest version as an ePub, available under a. Swift is a programming language for creating iOS, macOS, watchOS, and tvOS apps. Swift adopts safe programming patterns and adds modern features to make programming easier, more flexible, and more fun. Swift’s clean slate, backed by the mature and much-loved Cocoa and Cocoa Touch. Download the Swift logo to use in course materials and technical publications related to teaching, training, or describing the Swift programming language.
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Apple's free book on their new Swift programming language is now available for download. also found this but its a download of an epub file, not sure if you can open it on linux but you can easily convert it to pdf The Swift Programming. The Swift Programming Language. Contribute to apple/swift development by creating an account on GitHub.
Everything from scripting to object oriented and functional programming. Apple refers to Swift as a "protocol oriented programming language" and has expressed the goal of eventually making Swift useful for everything from scripts to an operating system. Wikipedia's Swift Page giving a good, Wikipedia-styled overview. The ePub version is also available on Swift. Join the Swift track A tremendous learning opportunity to explore the depth of your own knowledge Exercism is fantastic in learning new languages but that is not the extent of it.
If you are a "more experienced" programmer you may have encountered impostor syndrome: the idea you don't really know what you think you know. Exercism lets you solve problems and put them in the space of open feedback which is a tremendous learning opportunity to explore the depth of your own knowledge.
Even if you have been programming in a language for awhile it is worth checking into Exercism to see where you stand with current implementation practices. Tom Leen, Portland Relaxed.
It makes a good read and having worked your way through it and following all the excellent examples you will have achieved a deep understanding of many of the Swifty concepts. The author has paid great attention to detail in describing the various concepts that the language has to offer and gives sturdy advice about which structures in the language are suited to match which problems. There are examples galore, and all of them are worth a good study as they demonstrate well the power and pit-falls of the Swift language.
The examples are very good. They are also relevant to the real world or can be extended to be so. Aimed for the mid-level Swift program who is ready to level up, this book knows who its intended audience and serves them perfectly.
Good book, very thorough coverage of advanced Swift topics like generics protocol-oriented programming. Start out doing this imperatively, which means by utilizing mutable state. Loop over all the rides passed into the function.
Sort the rides using an Insertion Sort sort algorithm. Loop over the sorted rides to gather the names. From the perspective of a caller to sortedNamesImp of: , it provides a list of rides, and then outputs the list of sorted names.
Nothing outside of sortedNamesImp of: changes. You can prove this with another test. The logic of sorting rides by name is a single, testable, modular and reusable function.
The imperative code inside sortedNamesImp of: made for a long and unwieldy function.
The function is hard to read and you cannot easily work out what it does. You treat functions like other objects that you can assign to variables. Because of this, functions can also accept other functions as parameters or return other functions. Functions that accept or return other functions are called higher-order functions. It accepts another function as a parameter. This other function accepts a single value from the array as input, checks whether that value belongs and returns a Bool.
The output array contains only the array elements whose parameter function returns true. Think back to your list of actions that sortedNamesImp of: performs: Loops over all the rides passed to the function. Sorts the rides by name. Gathers the names of the sorted rides.
Instead of thinking about this imperatively, think of it declaratively, i. You are being declarative and telling the program what you want it to do.
This can look rather cryptic the first few times you work with it. It outputs an array of the same length after applying that function to each element of the collection.
The return type of the mapped function does not have to be the same type as the collection elements. You can also sort the ride names as shown below, when you use the sorted by: method on the Collection type to perform the sorting: print rideNames. Swift provides the left- and right-hand sides by default. The input function applies to each element of the calling collection, one by one, until it reaches the end of the collection and produces a final accumulated value.
This code can juice any array so be careful what you put in it :].
To be more practical, add the following method that lets you know the total wait time of all the rides in the park. The code uses Swift shorthand again to omit the return keyword. In this example, the iterations look like this: Iteration initial ride. This continues until reduce iterates through every Ride in parkRides. This allows you to get the total with one line of code!
Advanced Techniques You have learned about some of the common FP methods. Partial Functions Partial functions allow you to encapsulate one function within another. The output function takes an array of Ride objects and returns an array of Ride objects filtered by the provided category.