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Add hash to rustdoc example (#1282)

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Hashes are important (and somewhat confusing to novices) part of the
rustdoc.
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Yuri Astrakhan 2023-10-02 08:23:46 -04:00 committed by GitHub
parent 1d658ead10
commit 36449cb1b2
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src/testing/doc-tests.md
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@ -6,7 +6,7 @@ Rust has built-in support for documentation tests:
/// Shortens a string to the given length.
///
/// ```
/// use playground::shorten_string;
/// # use playground::shorten_string;
/// assert_eq!(shorten_string("Hello World", 5), "Hello");
/// assert_eq!(shorten_string("Hello World", 20), "Hello World");
/// ```
@ -17,4 +17,5 @@ pub fn shorten_string(s: &str, length: usize) -> &str {
* Code blocks in `///` comments are automatically seen as Rust code.
* The code will be compiled and executed as part of `cargo test`.
* Adding `# ` in the code will hide it from the docs, but will still compile/run it.
* Test the above code on the [Rust Playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=3ce2ad13ea1302f6572cb15cd96becf0).