Basics
Dart print
Printing with print
Dart print outputs to console with string interpolation.
Understanding the print Function
The print function in Dart is a fundamental tool used to output text to the console. This is particularly useful for debugging and providing real-time feedback in command-line applications. The function outputs any object passed to it as a string.
Basic Usage of print
To use the print function, simply pass the string or object you want to display on the console. Here's a basic example:
Printing Variables
Variables can be printed by passing them directly to the print function. Dart handles the conversion to a string automatically. Consider the following example:
String Interpolation in Dart
Dart supports string interpolation, allowing variables to be embedded directly within strings. This is done using the $ symbol followed by the variable name. For expressions, enclose them within curly braces { }. Here’s how it works:
Printing Complex Objects
Dart's print can also be used to output complex objects, including lists, maps, or custom objects. By default, Dart handles the conversion, but you can also customize this behavior by overriding the toString method in your classes. Here's an example:
Conclusion
The print function is a versatile tool in Dart programming, essential for outputting data to the console for debugging and interaction. By mastering its usage, particularly with string interpolation, you can produce clean and readable console outputs.
