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Update Speaker Notes for compound-types.md (#207)

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It could be a "gotcha" moment for readers when they associate `()` with `void` from, say, C++.
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Igor Petruk 2023-01-23 11:04:38 +00:00 committed by GitHub
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src/basic-syntax/compound-types.md
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@ -55,6 +55,8 @@ Tuples:
* The empty tuple `()` is also known as the "unit type". It is both a type, and
the only valid value of that type - that is to say both the type and its value
are expressed as `()`. It is used to indicate, for example, that a function or
expression has no return value, as we'll see in a future slide.
expression has no return value, as we'll see in a future slide.
* You can think of it as `void` that can be familiar to you from other
programming languages.
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