Kotlin Recipes vs Check Info

Tap Run and the real output appears right under the code, so you know what it does before it goes into your project. No Kotlin to install, no IDE, no setup, no account. 390+ short examples, one task each. Over 95% run on Kotlin 2.4. You know what you need, but not the exact syntax: • How do I fall back to a default value when a variable is null? • How do I return two values from a function? • How do I merge two maps? Each has a working example here. • 24 sections, including strings and dates, collections, nullable types, classes and interfaces, enums, generics, extension functions, lambdas, exception handling, regular expressions, multithreading, files, JSON and XML, algorithms, and design patterns. • What changed from Kotlin 1.4 to 2.0, with before-and-after code: value classes, sealed interfaces, data objects and the improved smart casts in Kotlin 2.0. • Reference, 320+ entries: keywords and standard library functions for strings, collections, files, and coroutines. Tap a word in the code to look it up. • 200+ SQL queries: JOIN, GROUP BY, subqueries, window functions; more than half run on a practice database. • Search looks inside the code: type joinToString to find every example that uses it. • Edit an example and run your version, or write your own. • Works on iPhone, iPad, and Mac. • Everything except running code works offline. Free version: 210+ Kotlin examples and 120+ SQL queries, the full reference, and 12 runs and 12 edits a day (Kotlin and SQL runs share one limit). Full version: all examples and queries, unlimited edits and examples of your own, and up to 30 Kotlin and 80 SQL runs a day. One-time purchase, no subscription. Built by a developer for developers. The project behind it has been in active development since 2015.

Introducing Check Info - a comprehensive toolkit designed to provide you with essential network and device information right at your fingertips. Whether you're a seasoned network administrator or simply curious about your digital footprint, Check Info offers a range of powerful tools to satisfy your needs. With Check Info's App Shortcuts feature, accessing crucial network IP information and device details has never been easier. Simply tap into App Shortcuts to quickly retrieve the information you need, eliminating the need for navigating through complex menus and streamlining your experience. Delve into the depths of internet registration data with our Whois Info feature. By leveraging the WHOIS protocol, Check Info enables you to query databases housing information about registered users, IP addresses, domain names, and more. Gain insights into the ownership details of internet resources and unravel the mysteries of the digital landscape effortlessly. Explore the intricacies of domain names and their associations with the Domain Name System (DNS) through Check Info's DNS Info tool. This hierarchical and decentralized system facilitates the translation of domain names into IP addresses, enabling seamless communication across the internet. Resolve queries, examine DNS records, and deepen your understanding of internet connectivity with ease. Decode the numerical labels of internet communication with our IP Info feature. Internet Protocol (IP) addresses serve as the backbone of network communication, facilitating identification and addressing of devices. With Check Info, uncover your host or network interface identification, delve into location addressing, and gain a comprehensive understanding of your digital presence. Check Info stands out for its simplicity, offering a user-friendly interface that makes navigating complex network information a breeze. With a wide range of tools covering IP, DNS, and Whois information all in one app, Check Info provides instant access to vital data through App Shortcuts, minimizing hassle and maximizing efficiency. Empower yourself with insights into your internet connectivity and device configuration with Check Info - your go-to companion for all things network and device information. Embark on a journey of digital exploration by downloading Check Info today!