4086d463a9
`Expected` should come before `actual`, other wise it leads to confusing compiler messages, e.g.
```
note: expected type `()`
found type `{integer}`
```
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| .. | ||
| error_handling | ||
| functions | ||
| if | ||
| macros | ||
| modules | ||
| move_semantics | ||
| primitive_types | ||
| standard_library_types | ||
| strings | ||
| structs | ||
| tests | ||
| threads | ||
| variables | ||
| test1.rs | ||
| test2.rs | ||
| test3.rs | ||
| test4.rs | ||