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Learning Dart

Learning Dart

4.4 (10)
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Learning Dart

Learning Dart

4.4 (10)

Overview of this book

Mastering Dart by Projects is a step-by-step guide that aims to give you hands-on knowledge about programming in Dart using an example-based approach.If you want to become a web developer, or perhaps you already are a web developer but you want to add Dart to your tool belt, then this book is for you. This book assumes that you have at least some knowledge of HTML and how web applications work. Some previous programming experience, preferably in a modern language like C#, Java, Python, Ruby, or JavaScript, will also give you a head start. You can also work with Dart on your preferred platform, be it Linux, Mac OS X, or Windows.
Table of Contents (14 chapters)
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13
Index

Variables – to type or not to type

In our first example (Raising rabbits) in Chapter 1, Dart – A Modern Web Programming Language, we started by declaring a variable rabbitCount dynamically with var, and then in the second version we gave it a static type int (refer to the file prorabbits_v1.dart and prorabbits_v2.dart in Chapter 1, Dart – A Modern Web Programming Language) and concluded that typing is optional in Dart. This seems confusing and has provoked a lot of discussion: "is Dart a dynamic language like Ruby or JavaScript, or a static language like Java or C#?" After all, some of us were raised in the (static) belief that typed variables are absolutely necessary to check if a program is correct, a task mainly performed by the compiler (but the Dart VM has no separate compiler step, and dart2js, the Dart to JS compiler, doesn't check types because JS is fully dynamic).

It turns out that no mainstream language actually has a perfect type system (static...

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