Author: jack

A Record is an anonymous, immutable, composite aggregate type that bundles multiple pieces of data of different types into a single object. Here are its core differences compared to List / Set / Map:

Every variable in Dart is fundamentally an object (an instance of a class). You can quickly create instances using literals, or initialize them by calling their corresponding constructors.

Dart supports three types of comments in total: single-line comments, multi-line comments, and documentation comments. The compiler ignores regular text inside comments, and only documentation comments can be used to generate code documentation.

Spread Operators: … and …?

They evaluate a collection expression, unpack all its individual elements, and insert them directly into another collection literal (List, Set, or Map).

It lets you chain multiple property assignments and method calls on the same object consecutively. This eliminates the need for temporary variables and produces cleaner, more readable code.

The conditional operators covered here are distinct from conditional statements such as if-else. They refer to the ternary operator and null-coalescing operator.

Two Types of Conditional Operators

Bitwise operators manipulate individual binary bits of numeric values and only work with integers.

Bitwise & Shift Operator Reference Table

Logical operators only operate on boolean values (true / false) to evaluate whether a condition holds true. They yield exactly two possible results: true (the condition is satisfied) and false (the condition fails).

Stores the value of the right-hand expression into the left-hand variable, overwriting any pre-existing value.

The check obj is T evaluates to true when the object obj implements or inherits type T — this includes parent classes, interfaces, and nullable variants of the target type.