Teddy Katz cb653b100c Document that assert! format arguments are evaluated lazily ...

It can be useful to do some computation in `assert!` format arguments, in order to get better error messages. For example:

```rust
assert!(
    some_condition,
    "The state is invalid. Details: {}",
    expensive_call_to_get_debugging_info(),
);
```

It seems like `assert!` only evaluates the format arguments if the assertion fails, which is useful but doesn't appear to be documented anywhere. This PR documents the behavior and adds some tests.

2021-02-16 00:55:46 -05:00

..

benches

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src

Document that assert! format arguments are evaluated lazily

2021-02-16 00:55:46 -05:00

tests

stabilize partition_point

2021-02-12 21:57:17 +09:00

Cargo.toml

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