CRED Flutter Developer Interview Questions and Answers

Singleton is a design pattern that restricts the instantiation of a class to one object, while an abstract class cannot be instantiated and is meant to be subclassed.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Abstract classes cannot be instantiated on their own and are designed to be subclassed to provide implementation details.

• Singleton pattern is commonly used ...read more

Flexible is used to size widgets based on their content, while Expanded is used to size widgets based on available space.

• Flexible widget sizes itself based on its child's size

• Expanded widget sizes itself to fill the available space in a Row, Column, or Flex

• Flexible can be used within a Row, Column, or Flex to allow the child to grow or shrink based on available space

• Expanded can be used within a Row or Column to fill t...read more