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Compile generics: Type inference example without edge cases #229

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Aug 7, 2025
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Compile generics: Type inference example without edge cases #229

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6 changes: 3 additions & 3 deletions source/_posts/2025-08-05-compile-generics.md
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Expand Up @@ -332,13 +332,13 @@ As noted above, though, typing against a generic that is part of a union, like `
Type inference is a feature of many heavily typed languages where the compiler or engine can "figure out" what the type of something is supposed to be based on context. As a trivial example:

```php
function add(int $x, int $y)
function concat(string $x, string $y)
{
return $x + $y;
return $x . $y;
}
```

It's readily obvious that the return type of that function is `int`, so a type inference engine will fill that in for you automatically.
It's readily obvious that the return type of that function is `string`, so a type inference engine will fill that in for you automatically.

That would be very helpful for Generics, especially if runtime Generics ever became possible.

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