Dart Chapter 3 of 15

Control Flow

Make decisions with if, else and switch, repeat work with loops, and control exactly when a loop stops or skips.

Until now your programs ran every line from top to bottom. Control flow lets a program choose between paths and repeat steps, which is where it starts to feel like real programming.

Lessons in this chapter

1. if, else if and else in DartLearn conditional statements in Dart: if, else if, else, nested conditions and if-case, with clear examples and common mistakes.
2. The Ternary Operator in Dart (condition ? a : b)Use Dart's ternary operator to choose between two values in a single expression, and know when an if statement reads better.
3. switch and case in DartLearn the switch statement in Dart: matching values, shared cases, default, guards with when, and how Dart 3 removed the need for break.
4. Loops in Dart: for, for-in, while and do-whileRepeat code in Dart with for, for-in, while and do-while loops and forEach. Learn which loop to pick and how to avoid infinite loops.
5. break and continue in DartUse break to leave a loop early and continue to skip one round. Includes labels for controlling nested loops in Dart.
6. assert in Dart: Catching Mistakes During DevelopmentLearn how assert statements work in Dart, when they run, and how to use them to catch programming mistakes early.