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writeups: Add ideas for online REPL landing page #7

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writeups: Add ideas for online REPL landing page
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@CohenArthur
CohenArthur committed Mar 31, 2023
commit 28aade9f65e8f35d9c969db0cca45fcc2df81b2e
19 changes: 19 additions & 0 deletions docs/writeups/9-online-repl.md
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# Online REPL landing page

Just throwing ideas out there

```rust
type Interjection = "hi";
type Name = "world" | "jinko";

func greet(start: Interjection, to_greet: Name) {
println("{start} {name}!")
}

greet("jinko", "world");
```

```rust
error: cannot widen type `"jinko"` to value of type `"hi"`
note: hi to you too!
```