String To Data Swift

The singleton pattern is a widely used design pattern in software development. Separate the string "Hello,How,Are,You,Today" by commas into an array (or list) so that each element of it stores a different word. Includes: Uses:. NET is a popular option. So the code added to ViewController. To keep the code simple, we’re using some shortcuts in order to seed our data. Just paste and compare. This tutorial shows how to add Azure App Service Mobile Apps, a cloud backend service, to an iOS app. utf8 which yield a UTF8View which will use Unicode's replacement character in case you have some illegal string. We use cookies for various purposes including analytics. For more information about value types, see Working with Cocoa Frameworks in Using Swift with Cocoa and Objective-C (Swift 4. It has a top-level array, with a few items of type String. SwiftyJSON is an open source library that helps you use JSON in Swift without tearing your hair out. Different Ways of Loading highcharts data. So our Web Service is ready, as you can see we are getting a JSON String as a response. It can store strings and numbers by converting them to NSString and NSNumber. Swift Guide to Map Filter Reduce May 9, 2016 · 6 minute read Swift Using map, filter or reduce to operate on Swift collection types such as Array or Dictionary is something that can take getting used to. Clojure provides easy access to the Java frameworks, with optional type hints and type inference, to ensure that calls to Java can avoid reflection. the group FirstRand is a portfolio of integrated financial services businesses and offers a universal set of transactional, lending, investment and insurance products and services. Swift 4 brings some much needed improvements and simplifications to String. downloading this data in any other way than by manual ticker symbol entry is strictly prohibited. Swift 5 switches the preferred encoding of strings from UTF-16 to UTF-8 while preserving efficient Objective-C-interoperability. The new version of Swift introduced classes and APIs that make JSON parsing easy to handle. How to convert a string into a variable?. If you’ve started migrating to Swift 3. Replace Magic Strings with Enumerations in Swift "What can I do to avoid these 'magic strings' in my code?" - This was the question I asked myself recently as I found myself in prepareForSegue comparing segue. Standards touch all areas of our lives, so standards developers are needed from all sectors of society. let string = "hello" let array: [UInt8] = Array(string. 0-dev) and click Run. This can make your app quite useful. For your convenience, CryptoSwift provides two functions to easily convert an array of bytes to Data or Data to an array of bytes: Data from bytes:. How to Encrypt and Decrypt Data In Java Using AES Algorithm. Questions: This question already has an answer here: Swift 3: Expression implicitly coerced from 'UIView?' to Any 3 answers Answers: The print function requires a set of Any parameters. Create a String. If you don’t have much to serialize, you can write a method for your specific type. Ensure Swift is the selected language. The > and < operators do exist. Similarly, the webservice sends data encoded as JSON to your app, and you decode the data to native types such as String and. Here is some more generalized code for extracting strings from a byte array where the strings have been encoded in UTF-8. How do I construct a regular expression to remove all OTHER text except the above from a string. It is often used with other string functions to manipulate string data. Select Single View from next dialog box. Despite its popularity, it's often considered an anti-pattern. 0: Why Guard is Better than If. URL Variables make for a quick method for pre-populating existing data into a survey. Like if statements, switch case controls the flow of programs by allowing programmers to specify different code that should be executed in various conditions. You'll learn how to store data in swift using the core data entity. The function is fairly straightforward, but the interesting part to a security professional is the NSPredicate declaration, which is defined as a format string that limits what data. Do the same thing also on the second controller. 3 Our wrapper function should take the path of the program. Previously we set up a Swift app that displayed info about Star Wars species from the Star Wars API using Alamofire. Includes: Uses:. The concept encryption is the process of converting electronic data into it’s another equivalent form, called as “ciphertext” that cannot be easily understood by anybody except the authorized personnel. UIDocumentInteractionController requires a delegate as well as implementing a UIDocumentInteractionControllerDelegate protocol method in order to be able to load a preview screen for the file. Introduction. There are four ways to pass the data from View to Controller which are being explained below :- 1) Traditional Approach: In this approach we can use the request object of the HttpRequestBase class. We collect data, process data, present data and most importantly store data. If you don't see the Get Data button, click New Query > From Database > From SQL Server Database. Constants and Variables; Identifier Names; Data Types. When localizing strings, it is important to define one localizable string per instance, due to grammatical rules. I get that values In data set such that. In Swift, Strings are hard to manipulate. It is often used with other string functions to manipulate string data. Note : You can encode codable types to various formats such as Property Lists (PLists) , XML or JSON , but for this tutorial you'll only work with JSON. string for strings. This is the # 1 tool to JSON Prettify. In Swift 1 through 3 substring operations have changed significantly. swift代码出错: Login. Spliting a string in Swift 4: To solve the above problem, we can split one string and modify it like whatever we want. Swift Guide to Map Filter Reduce May 9, 2016 · 6 minute read Swift Using map, filter or reduce to operate on Swift collection types such as Array or Dictionary is something that can take getting used to. Using Transformable && Binary Data properties in Core Data: As you know Core Data attributes can have properties like Undefined, Integer16, Integer32, Integer64, Float, Decimal, Date, Boolean, String, Double, Binary Data in Objective C has to offer. 1 (especially useful printing to Xcode console) - Data+PrettyPrint. swift file to declare your UIImageView as an IBOutlet. The page we would be scraping data from is List of countries and dependencies by population. We often use JSON to send and receive data from web services. Discussions about building iOS, tvOS, and watchOS apps with Xamarin. Pretty print JSON string from Data in Swift 4. Sort on a collection of that custom type, we can sort Go slices by arbitrary functions. Swift 4 and iOS 11 brings us the Codable protocol as a way to convert a type to and from an external format. Access Tokens. NSDate is a class cluster; its single public superclass, NSDate, declares the programmatic interface for specific and relative time values. Send Amazon. let animalSound : String? = soundDictionary[searchString] Swift also provides a feature called implicitly unwrapped optionals. In addition to the default file-based connectivity method, additional connectivity options are provided for back-office communication, including IBM WebSphere MQ and SOAP. Deprecation – Philips Hue SDK. 2 Implementation example 2. In this post, we will go over a few concepts about data and demo using JSON in a Xcode Playground. We collect data, process data, present data and most importantly store data. I'm trying to convert this Objective-C code (originally found in this Stack Overflow question) which turns an NSString into NSData to Swift: - (NSData *)dataFromHexString { const char *chars =. An access token is an opaque string that identifies a user, app, or Page and can be used by the app to make graph API calls. Here’s how to find out. Shop Finish Line for basketball sneakers, running shoes, casual shoes & athletic gear from top brands like Nike, Jordan, adidas, Under Armour & more. NSLog vs println. I'm studying for job interviews for Swift positions by completing code problems. How iRobot used data science, cloud, and DevOps to design its next-gen smart home robots Comparing strings with and without. We hired him to learn programming in Swift using the exercises from Swift programming from Scratch. We are going to kill 3 birds in one stone. A Swift Set provides fast lookup for whether a value is contained therein, especially compared with an Array. It can store strings and numbers by converting them to NSString and NSNumber. A frequent task many people encounter when working with lists of data in Excel is splitting full names into the first-name and last name components. Char8 interface, which will truncate each Unicode Char to 8 bits as soon as it is converted to a byte string. Unicode defines U+00E9 , "LATIN SMALL LETTER E WITH ACUTE", as a single value. Java Double To String Examples. Swift strings are represented by the String type. Fountaine Pajot have been designers and boat builders since 1976. How do you pass data between view controllers in Swift? Passing data between view controllers is an important part of iOS development. The storage representation and machine instructions differ from machine to machine. NSString has > [code ]init?(data: Data, encoding: UInt)[/code] Returns an NSString object initialized by converting given data into UTF-16 code units using a given encoding. If I get a value of 5. Discuss how to create vectors of numeric, logical and character string data types. To process the XML data, each record has a node type that can be determined from the NodeType property. The caption for the post is simply a long string of “Ahahahahahhahahahha. swift, right below the myLabel Outlet's declaration. Swift program that uses Int with invalid String // This String has no numeric characters. A quick way to see the difference between Swift. I'm trying to convert this Objective-C code (originally found in this Stack Overflow question) which turns an NSString into NSData to Swift: - (NSData *)dataFromHexString { const char *chars =. Generally, all strings you want to show to the user in one form or another have to be localized. Code syntax is changed in version Swift 3. Weather Underground is a global community of people connecting data from environmental sensors like weather stations and air quality monitors so we can provide the rich. This buffer can then be shared by different copies of a string. In a function definition, this refers to the "owner" of the function. Convert Data to String in Swift 3. A value of value type is the actual value. eval is evil in He's written more than 1,000 articles for SitePoint and you can find him @craigbuckler. Then we created a String variable name with “” as default value (i. Let’s take a look at how to prevent memory leaks in swift closures. Run Swift is a web tool where you can easily try Apple's Swift language online. Scheduled for launch in Fall 2003, Swift is a collaboration between the United States, the United Kingdom, and Italy. Re: i need help parsing a swift data string again 796447 Jun 19, 2003 7:29 PM ( in response to 807545 ) You need to use the indexOf("::", fromIndex ) method to tell it to start at fromIndex. 0, SQL Server 2000 and Crystal Report 8. Convert data to string swift keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. segueIdentifier to in-line hard-coded Strings. Swift 4 includes a new way to generate & parse JSON using the Codable protocol. io publishes books on advanced techniques and practices for iOS and OS X development. Let's get started!. You can try out some of the new features in this playground put together by Paul Hudson. Objective C and Cocoa HMAC SHA256. from the Common Core’s embrace of technology and data — a charge Gates. Text Comparison - Compare Strings online using Text_Diff at TextDiff. One of the most common features of procedural programming languages is the concept of an array. In this post, we're going to start looking at these in detail with a look at the numeric data types available in Swit. Swift can bring clarity to our code, thereby making it easier in some ways to use Core Data. Right-click on the mouse (or hold Control and click the mouse button) and drag a blue line into the first controller's. This can make your app quite useful. When localizing strings, it is important to define one localizable string per instance, due to grammatical rules. Cross-Platform C++, Python and Java interfaces support Linux, MacOS, Windows, iOS, and Android. Here is the basic structure that we are going to do: Let’s begin. Press J to jump to the feed. In computer programming, data types can be divided into two categories: value types and reference types. The most common operation when using date (NSDate) objects in applications, is to convert them into string objects so they can be properly formatted and shown to the users. r/swift: Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns. Generating Basic QR Codes in Swift 3. The base64 string will be processed and converted into a writable Blob. You can use the Foundation framework’s JSONSerialization class to convert JSON into Swift data types like Dictionary, Array, String, Number, and Bool. When it comes to Swift there are a fair amount of solutions to this problem both built into the language and by the community. This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions. if let parsedNumber = Int (invalid) { // This is not reached as the optional is Nil. Means you want to append or add some more info with same key in dictionary. first string contains data tables records details and other string contains Count value. Add your AdMob App ID to your app's AndroidManifest. Prime Day is an annual celebration with awesome deals and exciting product launches, plus live entertainment and more, exclusively for Prime members. Constants and Variables; Identifier Names; Data Types. We are going to kill 3 birds in one stone. One of them is the introduction of value type wrappers for common Foundation reference types such as NSData (Data) or NSDate (Date). Parse the data with JSON. You'll see how to use core data to save, read data and clear data from your iOS app. But now I think it is time to actually start diving in and. Strictly speaking, a single Swift based array is only able to store values that are of the same type. The String? type used in the following snippet means that animalSound stores either nil or a wrapped string value, like, for example, {some”Narf!”} — assuming your test sounds come from a Steven Spielberg cartoon. Here is some more generalized code for extracting strings from a byte array where the strings have been encoded in UTF-8. which you will learn in later chapters. For pickers see the post for more information about using UIPickerView. h, because then you will get the header file for C-style strings rather than for the C++ string class). We're going to learn about creating a data model, add records to the model, fetch data, and display data using a list. 0 has actually introduced the String(data:encoding:) as an String extension when you import Foundation. How do I construct a regular expression to remove all OTHER text except the above from a string. Swift 4 brings some much needed improvements and simplifications to String. Home; About;. Here is a picture of a typical table displayed within a scroll pane: The rest of this section shows you how to accomplish some common table-related tasks. Convert image to Data URI string online. It will convert USD to Euro by using web API that returns JSON data. Snipping Tool for Mac to take screenshot. JTable does not contain or cache data; it is simply a view of your data. As keen sailors, our aim has been to develop unique expertise to create high-performing, seaworthy, innovative and comfortable boats. Landslides. It's easiest to compare with a dictionary in Swift, so it's a list of values associated with keys. When something can be optional in Swift, that means it can point to "nothing". Left String - Extract characters from the beginning of a string Description: Similar to the Left function in VB a batch script can return a specified number of characters from the left side of a string by specifying a substring for an expansion given a position of 0 and a length using :~ while expanding a variable content. To initialize a set with predefined list of unique elements, Swift allows to use the array literal for sets. Note that the decode() method needs to know the type of the result instance. How do I construct a regular expression to remove all OTHER text except the above from a string. Arrays are the building blocks for modern. An NSNumber is an NSObject that can contain the original C style numeric types, which even include the C/Objective-C style BOOL type (that stores YES or NO). Applications manipulate data and. Swift Data Types - Swift, is rich in data types. In this article, we'll start learning the fundamentals of the Swift programming language by exploring variables and typing. And then we are displaying the name with a “Hello” prefix in the label we created. Using Transformable && Binary Data properties in Core Data: As you know Core Data attributes can have properties like Undefined, Integer16, Integer32, Integer64, Float, Decimal, Date, Boolean, String, Double, Binary Data in Objective C has to offer. Then, download a simple Todo list iOS sample app that stores data in Az. The end of lines within this string also count as a newline when printed""" Strings can be accessed as a whole string, or a substring of the complete variable using brackets ‘[]’. Swift JSON Parsing. Swift Programming from Scratch The Swift Sandbox is integrated, making the exercises interactive. The variable will then store data as a string of characters. Strings in Swift 4 are an ordered collection of characters, such as "Hello, World!" and they are represented by the Swift 4 data type String, which in turn represents a collection of values of Character type. A permutation, also called an “arrangement number” or “order,” is a rearrangement of the elements of an ordered list S into a one-to-one correspondence with S itself. Instead it has to do with bridging between Swift and Obj-C types and (new in late Swift 3 betas) to do with reference "wrapping" in the new value types. Targets that do not contain any Swift code will not be selected. If not logged in: If the user is logged in: Now let's get the data from Instagram, like recent photos, popular photos and user details. Thankfully, Swift Strings, Arrays, and Dictionaries are automatically converted to their NS counterparts, so they can be stored in here as well. Deprecation – Philips Hue SDK. Add the following variable to the ViewController. In computer programming, data types can be divided into two categories: value types and reference types. Weather Underground is a global community of people connecting data from environmental sensors like weather stations and air quality monitors so we can provide the rich. This Swift code example will demonstrate how to convert JSON String to NSDictionary in Swift 2 and Swift 3. In contrast to JSONSerialization which understands JSON types such as strings and numbers and arrays and dictionaries, JSONDecoder instantiates anything that's Decodable — that's how you can decode JSON directly to your own types. Read and Write String Into a Text File In this code example we will first write a string value into a text file and then we will read the content of that text file to see if it contains the string we have written to it. JSON Generator was created in order to help with this. You can use the Foundation framework’s JSONSerialization class to convert JSON into Swift data types like Dictionary, Array, String, Number, and Bool. We are going to kill 3 birds in one stone. Where to go from here In this tutorial, we learned how to convert UIImage to base64 string in swift 4 and also convert base64 string to UIImage object using. name // Trigger get value. js and Java clients maintain their own internal version of any active data. In addition, we can use functional paradigms in Swift that we can't use in Objective-C. Swift; Practice: Introduction to Programming; Data and Operators. Written By: Debasis Das (21-Mar-2015) We can use print, println and NSLog in Swift but before we start into sample code lets understand the difference of each. I’ve got plans to update a bunch of posts but let’s start with the simplest stuff: Making networking calls using. Characters and Strings in Swift. The power behind all computing is data. # Add dependencies # Installing dependencies using CocoaPods. C Program to Check whether the Given String is a Palindrome - Palindrome is a string, which when read in both forward and backward way is same. Swift Array Initialization. You can create empty or pre-populated buffers from a variety of sources and later add or remove bytes. It was the first factory loaded rifle cartridge with a muzzle velocity of over 4,000 ft/s (1,200 m/s). - Convert a string to Uppercase - Generate a Unique Identifier - Get substring from range - Get the length of a string - Loop through characters in string - Repeat a string X times - Replace string in string - Reverse a string - Split a string by another string - Trim whitespace from a string - Use string interpolation. Parse the data with JSON. Swift, is rich in data types. Optionally, you can move to Swift 2. Access Tokens. In contrast to JSONSerialization which understands JSON types such as strings and numbers and arrays and dictionaries, JSONDecoder instantiates anything that's Decodable — that's how you can decode JSON directly to your own types. but the in the JSON I received that value was a String, and as you know use String value to compare dates is not a good approach, so I decided that the best way to do it is converting those. Now you have to add a UIImage variable to the SecondVC. First Steps Conditionals Types Loops Strings Arrays Functions Recursion Closures Tuples & Enums Dictionaries Chapter 10: Tuples & Enums Tuples A tuple is a group of zero or more values represented as one value. The function is fairly straightforward, but the interesting part to a security professional is the NSPredicate declaration, which is defined as a format string that limits what data. The first step is to create a new mobile backend on Azure. This means there will be no new SDK releases except for critical updates (e. Note that how we use the @ symbol to declare the 'name' variable that wrapped by property wrapper. But how fast is it, actually? There’s a good chance you’re not getting the Internet connection speed you’re paying for, but maybe you are. Swift by Sundell readers get a free Swift mini e-book and a massive 40% discount on a great selection of content about Swift, iOS development, computer science, and many other topics — like Android and backend development. Weather Underground is a global community of people connecting data from environmental sensors like weather stations and air quality monitors so we can provide the rich. Working with JSON in Swift If your app communicates with a web application, information returned from the server is often formatted as JSON. The Swift String API is hard to get used to. 2, as a means to learn open-source Swift, the Swift Package Manager, and deploying to Linux. 2 do not exist. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. Integer Data Type; Floating-Point Data Type; String Data Type; Boolean Data Type; Nothing Data Type; Order of Operations; Assignment; Arithmetic Operators; Integer Division and Modulus; Unary Operations; Lvalue and Rvalue. When you use other encodings, it is not safe to force-unwrap (unless you explicitly know that a string is guaranteed to be representable). Here’s an example: In the above screenshot you see a property list file called Fruit. All of Swift's basic types (such as String, Int, Double, and Bool) are hashable by default, and can be used as set value types or dictionary key types. By far the most painful part of this preparation is the dismal state of data structures in Swift. We show you what's changed, and how to use these data structures in Swift. I found same answer in several places but it does not work anymore in swift. 6] x = map(str, x) x = list(x) # Or in one-line, take it from l. name // Trigger get value. Arrays can be used with optionals. If you prefer Objective-C, then I recommend reading my earlier series on the Core Data framework. Stuff We Do. How to Make HTTP Requests in Swift 3 Making HTTP requests is core functionality for modern languages and one of the first things many developers learn when acclimating to new environments. 0 has actually introduced the String(data:encoding:) as an String extension when you import Foundation. SQL contains string - In this blog, I wil explain how to check a specific word or character in a given statement in SQL Server, using CHARINDEX function or SQL Server and check if the string contains a specific substring with CHARINDEX function. string synonyms, string pronunciation, string translation, English dictionary definition of string. This way, when you need to use the key in multiple places throughout your code, you can use the constant instead of retyping the string (which increases the likelihood of mistakes). These two operators provide a simple and expressive way to check the type of a value or cast a value to a different type. We’ll start with a simple search of species names then add a scope bar to search. Swift 4 also introduces Optionals type, which handles the absence of a value. Sort on a collection of that custom type, we can sort Go slices by arbitrary functions. For example, if we split "Hello World" by a space (" "), it will be divided in to two parts "Hello" and "World". I found this response entirely by chance. All of Swift's basic types (such as String, Int, Double, and Bool) are hashable by default, and can be used as set value types or dictionary key types. Some of the types can have a special internal representation - for example, numbers, characters and booleans can be represented as primitive values at runtime - but to the user they look like ordinary classes. You can create a String either by using a string literal or creating an instance of a String class as follows −. in this xcode text field tutorial we will learn how to handle text field in ios. Encryption & Decryption. I am using Xcode 6. In a live app, we can store our data in collection types such as dictionaries and arrays. Discussions about building iOS, tvOS, and watchOS apps with Xamarin. An array, for example, could be created to store a list of String values. The Instr function is often used in combination with other string functions for manipulating string values. The power behind all computing is data. Swift's strict type safety rules make this less trivial than it sounds. Year: 2007. ToDecimal etc. You can create a for in loop in Swift as: for in { } The above loop iterates over a range and we can access each element returned from the range in variable. Hi – I’m Andrew. Re: i need help parsing a swift data string again 796447 Jun 19, 2003 7:29 PM ( in response to 807545 ) You need to use the indexOf("::", fromIndex ) method to tell it to start at fromIndex. He helped us understand a lot about what a non-programmer mind thinks when seeing some code or learning a new concept. When a type isn't specified, Swift will create a String instance out of a string literal when creating a variable or constant, no matter the length. For a Dictionary> as you have. segueIdentifier to in-line hard-coded Strings. Finally, you convert the data to a string using UTF-8 encoding. The this Keyword. Definition of string for English Language Learners. Parsing JSON object by SWIFT. To be able to operate on variables, it is important to know something about the type. In contrast to JSONSerialization which understands JSON types such as strings and numbers and arrays and dictionaries, JSONDecoder instantiates anything that's Decodable — that's how you can decode JSON directly to your own types. Click on the Data tab, then Get Data > From Database > From SQL Server Database. With the Gmail API, go beyond what standard email protocols allow you to do!. Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs. The exponent applied to the base e. Cross-Platform C++, Python and Java interfaces support Linux, MacOS, Windows, iOS, and Android. Does a UIScrollviewDelegate go in a UIScrollview controller or the uiscrollview?. It's easiest to compare with a dictionary in Swift, so it's a list of values associated with keys. The Firebase client then synchronizes that data with the remote database servers and with other clients on a "best-effort" basis. This course is all about JSON encoding and decoding using Swift language. We can do this easily with Swift. Updating Strings For Swift 4 Sep 25, 2017 · 4 minute read Swift. 0 has actually introduced the String(data:encoding:) as an String extension when you import Foundation. JSON Generator was created in order to help with this. Press question mark to learn the rest of the keyboard shortcuts. Swift provides its own versions of all fundamental C and Objective-C types, including Int for integers, Double and Float for floating-point values, Bool for Boolean values, and String for textual data. Parsing JSON object by SWIFT. How to reverse string in java with method signature and examples of concat, compare, touppercase, tolowercase, trim, length, equals, split, string charat in java etc. It’s easiest to compare with a dictionary in Swift, so it’s a list of values associated with keys. Press J to jump to the feed. EXP is the inverse of LN, the natural logarithm of number. firstName means the firstName property of this object. 3 now and invoke the migration assistant again later to update to Swift 3. Optionals and Array. Swift; Practice: Introduction to Programming; Data and Operators. How to Encrypt and Decrypt Data In Java Using AES Algorithm. Wondering what is the simplest way to parse small XML resources using Swift?. For example, my string in the data flow is: NNNNNRJKSURNNNEJNNNN Now I need to count the number of "N"s in that column. C# DateTime is a struct type, which is mostly used in applications to manage date, date-time, time data types. It seems that Swift 2. A string’s data is only copied lazily, upon mutation, when more than one string instance is using the same buffer. Create a String. methods as these will not throw exception even when the input value is null as shown below:. Java Code Examples: Ready to use Java examples which you can use directly into your Java programs. Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. Convert Data to String in Swift 3. As Swift 4 is type-safe, it performs type-checks when compiling your code and flags any mismatched types as errors. : a long, thin piece of twisted thread that you use to attach things, tie things together, or hang things : a group of objects that are connected with a string, wire, chain, etc. In this case Xcode is telling you that it implicitly coerced the optional string into an Any object (by transforming the String. This parameter can also be a null pointer, in which case it is not used. The Swift Numeric Data Types As you may know, Swift is a type-safe language and good understanding of the data types that are available is therefore critically important. Questions: This question already has an answer here: Swift 3: Expression implicitly coerced from 'UIView?' to Any 3 answers Answers: The print function requires a set of Any parameters. There has been a number of great libraries for this, but it is quite refreshing to see a fully-supported solution that is easy to adopt but also provides the customization you need to encode and decode complex scenarios. This approach is little tricky. I'm trying to convert this Objective-C code (originally found in this Stack Overflow question) which turns an NSString into NSData to Swift: - (NSData *)dataFromHexString { const char *chars =. Swift Array Initialization. If you want to convert String to NSData using NSUTF8StringEncoding:-var stri:String = "this is my string to convert to NSData" let utf8str = stri. 0 comes with the excitement of the guard statement. These are my notes on what I needed to change to update my Swift String Cheat Sheet for Swift 4.