Useful Swift String Extensions



            

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System Design Interview For Mobile Engineers

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Introduction As you gain seniority in Software Engineering, the system design interview becomes the most important interview. This interview is focused on your ability as an engineer to look at and understand the design of an application from a holistic level. You are expected to start from a high-level view and then do a deep dive into individual components. In this article, I have shared my recipe to approach the system design interview problem by going through an example. Sounds interesting?... Keep reading I find the system design interview interesting because they are most realistic, holistic, and involve great communication skills.  Approaching a System Design Problem So I watched different kinds of system design interviews tutorials and made  my own custom script that made sense to me as a mobile developer. By no way or means, this is a comprehensive list, this is just something that has worked for me. So here is the rundown of different sections I used to tackle the sy...
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How to make an iOS App Secure?

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This is mobile era and pretty much everything these days can happen from our smart phone. Thanks to millions of apps out there which help us in accomplishing anything we want. Whether it is maintaining your schedule (calendar) to managing financial information on the go, all things can be done by mobile apps running on our smart phones. Since these apps have access to so much of confidential information, as developer when we make an app we need to follow highest security standards so that information is not accessed by someone who is not entitled for it.  When it comes to iOS devices there are more than billion active devices that use iOS apps on daily basis.  Here I am compiling the different security practices that an iOS developer should always keep in mind while developing apps. 1. Enable ATS in mobile apps  With launch of iOS 9 and ELCapitan Apple launch ATS (Apple Transport Security) which forces apps to only connect to secure network. This means any connection that...
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How to use Builder Design Pattern in Swift?

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As a developer, we should always follow a design principle that acts as a guide to structuring our code so that it is modular,  easy to read, easy to understand, and scalable. In this article, I will be discussing behavioral design pattern, how to use them, and their implementation in Swift. Read on! Categories of Desing Pattern Design Pattern falls mainly under the following categories 1. Creational 2. Structural   3. Behavioral In this article, we will cover the Builder Designer Pattern which is a type of Creational Design Pattern Builder Design Pattern Why? We create objects for our classes to leverage the functionality a class provides. Sometimes object creation is simple and can be done by the simple initializer. Other objects might have complicated requirements, for eg, it may require a lot of arguments to initialize the object, which in my opinion is too cumbersome and non-productive. Also, we might need to mix and match these params for initialization. In these ca...
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