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Clarify that function definition needs to be in scope. Fixes #3003 #3006

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Clarify that function definition needs to be in scope. Fixes #3003 #3006

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2 changes: 1 addition & 1 deletion src/ch03-03-how-functions-work.md
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Expand Up @@ -24,7 +24,7 @@ of parentheses. Because `another_function` is defined in the program, it can be
called from inside the `main` function. Note that we defined `another_function`
*after* the `main` function in the source code; we could have defined it before
as well. Rust doesn’t care where you define your functions, only that they’re
defined somewhere.
defined somewhere in scope.

Let’s start a new binary project named *functions* to explore functions
further. Place the `another_function` example in *src/main.rs* and run it. You
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