Counter with Custom Step - Dart Typing CST Test
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Counter with Custom Step — Dart Code
A counter that can increment or decrement by a custom step value.
void main() {
int count = 0;
int step = 3;
void updateUI() => print('Counter: $count');
void increment() { count += step; updateUI(); }
void decrement() { count -= step; updateUI(); }
void reset() { count = 0; updateUI(); }
updateUI();
increment();
decrement();
reset();
}Dart Language Guide
Dart is a modern, object-oriented programming language developed by Google, optimized for building web, server, and mobile applications, particularly for Flutter. It emphasizes performance, strong typing, and productive development.
Primary Use Cases
- ▸Mobile app development with Flutter
- ▸Web applications and progressive web apps (PWAs)
- ▸Server-side applications with Dart VM
- ▸Command-line tools and scripts
- ▸Cross-platform desktop applications
Notable Features
- ▸Strongly typed with sound null safety
- ▸Ahead-of-time (AOT) and just-in-time (JIT) compilation
- ▸Hot reload for fast development cycles
- ▸Rich standard library and asynchronous support
- ▸Interoperability with JavaScript for web development
Origin & Creator
Created in 2011 by Google, designed by Lars Bak and Kasper Lund.
Industrial Note
Dart is specialized for cross-platform development, especially for Flutter, enabling single codebases for mobile, web, and desktop applications.