Mastering Tuple Structs in Rust

Tuple structs are a way to create new types with named fields, but without giving each field its own name. This can be useful for encapsulating a single value or a small group of related values into a distinct type, improving code readability and type safety. This challenge will guide you through defining and using a basic tuple struct.

Problem Description

Your task is to define a tuple struct in Rust that represents a 2D point in space. This struct should hold two f64 values: one for the x-coordinate and one for the y-coordinate. You will then create an instance of this struct and demonstrate how to access its individual components.

Key Requirements:

• Define a tuple struct named Point2D.
• This struct should have two fields of type f64.
• Create an instance of Point2D with specific x and y values.
• Print the x and y coordinates of the created Point2D instance.

Expected Behavior:

The program should compile successfully and, when run, print the x and y coordinates of the point in a readable format.

Edge Cases:

• Consider the initialization with floating-point numbers.

Examples

Example 1:

// No input needed, the struct and its instantiation are part of the solution.
// The output will be printed by the program.

The x-coordinate is: 5.5
The y-coordinate is: 10.2

Explanation:

A Point2D tuple struct is defined. An instance is created with x = 5.5 and y = 10.2. The program then accesses these values using tuple indexing and prints them.

Constraints

• The tuple struct must be named Point2D.
• The fields within Point2D must be of type f64.
• You should use tuple indexing (e.g., point.0, point.1) to access the coordinates.

Notes

Remember that tuple structs are accessed using dot notation followed by the index of the element (starting from 0). This is similar to how you would access elements in a regular tuple. This exercise is fundamental for understanding how to create custom data structures in Rust.