Awesome Flutter tips

Offers ready-to-use code for widgets like RichText and SliverAppBar with Dartpad links for immediate testing, as seen in Tips 6 and 17.

Clarifies advanced Dart features such as the null-aware operator and cascade notation with before-and-after code comparisons, enhancing productivity.

Promotes best practices like relative imports and literal collection initialization, directly improving Flutter code standards per Tips 10 and 12.

Demystifies Key usage for widget state preservation with detailed explanations and a GIF visualization in Tip 18.