Create a String extension that adds a withPrefix() method. If the string already contains the prefix it should return itself; if it doesn’t contain the prefix, it should return itself with the prefix added. For example: "pet".withPrefix("car") should return “carpet”.
Create a String extension that adds an isNumeric property that returns true if the string holds any sort of number. Tip: creating a Double from a String is a failable initializer.
Create a String extension that adds a lines property that returns an array of all the lines in a string. So, “this\nis\na\ntest” should return an array with four elements.
Perry Street Software is Jack’d and SCRUFF. We are two of the world’s largest gay, bi, trans and queer social dating apps on iOS and Android. Our brands reach more than 20 million members worldwide so members can connect, meet and express themselves on a platform that prioritizes privacy and security. We invest heavily into SwiftUI and using Swift Packages to modularize the codebase.
2 weeks ago
The three challenges for the project are complete.