Flutter for Beginners

Additional debugging features

Dart provides additional features to help with advanced debugging with variants of the common tools that can make the debugging process even more useful. These are as follows:

• The debugger() statement: Also called programmatic breakpoints, this is where we can add a breakpoint only if an expected condition is true:

void login(String username, String password) { debugger(when: password == null); ...}

In this example, a breakpoint will occur only if the condition in the when parameter is true, that is, only if the password argument is null. Let's say this is an unexpected value: pausing the execution at this point may help to see why it occurs and how to react to it. This is very useful for tracing unexpected ...