From the course: Rust Essential Training
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Enum methods
- You can define methods that act on enums similar to defining methods for structs to demonstrate that let's implement a method for the shape enum, we defined in an earlier video to get the perimeter of the shape, which can be one of three possible enum types a circle, a rectangle, or a triangle. We'll start by creating an implementation block or the shape type, just like we would with a struct. Then within that block, let's define a function named get perimeter. It will have just one input parameter which is a reference to the enum named self and it will return a floating point value. Now, the equation to calculate the perimeter for each of the three shapes is different. So we need to determine which calculation to perform based on the type of shape. This is the perfect time to use a match expression. We'll perform a match on the reference to yourself. As a side note in past versions of Rust, we would also need to include…
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