src/tools/clippy/src/docs/identity_op.txt


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### What it does
Checks for identity operations, e.g., `x + 0`.

### Why is this bad?
This code can be removed without changing the
meaning. So it just obscures what's going on. Delete it mercilessly.

### Example
```
x / 1 + 0 * 1 - 0 | 0;
```