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- Hello. Welcome to Lesson 12.

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In this lesson, we look at
traits which are similar

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to interfaces in other OO languages.

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We'll begin with a look
at how to define a trait

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and how to implement it in a structure.

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Then we'll see how to use
traits to achieve inheritance

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and polymorphism in Rust.

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We'll also see how a trait
can inherit from other traits

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to achieve a hierarchy of functionality.

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For the remainder of the lesson,

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we'll take a look at some
of the standard traits

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in the Rust Library, and
we'll see how and why

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to implement them in your structures.

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We'll see the display
trait, the debug trait,

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the drop trait, the clone
trait, and the copy trait.

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Knowing about these traits

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will give you a much better understanding

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about how Rust works
internally as a language.