Yes, some of the examples are weak. However, the case of unused variables is a well-known problem. Caught but unused exceptions is one common use case, and they

Yes, some of the examples are weak. However, the case of unused variables is a well-known problem. Caught but unused exceptions is one common use case, and they have some code snippets of that in there too. Using _ is a neat solution. For those who don't face that issue, life continues as before.