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Mar 2, 2017
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Unit-like structs doc: Improve code sample #40144

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Unit-like structs doc: Improve code sample
MajorBreakfast Feb 28, 2017
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Unit-like structs doc: Add compile fail tag
MajorBreakfast Mar 1, 2017
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5 changes: 3 additions & 2 deletions src/doc/book/src/structs.md
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Expand Up @@ -255,13 +255,14 @@ rather than positions.

You can define a `struct` with no members at all:

```rust
```rust,compile_fail,E0423
struct Electron {} // Use empty braces...
struct Proton; // ...or just a semicolon.

// Whether you declared the struct with braces or not, do the same when creating one.
// Use the same notation when creating an instance.
let x = Electron {};
let y = Proton;
let z = Electron; // Error
```

Such a `struct` is called ‘unit-like’ because it resembles the empty
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