Add missing period in when{}.otherwise{} snippets

[valdaarhun]

In some places, the when{}.otherwise{} chain is missing a period. This PR adds the missing period in those snippets.

[schoeberl]

The dot is usually not needed. Why add it?

[valdaarhun]

Thank you for the prompt reply.

The dot is usually not needed. Why add it?

Yes, you're right. I tinkered around with a few examples and it works without the period.

At the time of opening this PR, there was some confusion on my part. I had gone through chisel's documentation and tried hunting for resources (such as these slides) where the dot isn't used but I wasn't able to find any example that uses this construct without the dot.

I guess after reading this line in the book, I incorrectly assumed that the statement must be true for the otherwise part as well. There are a few other examples (such as Combinational.scala) in the book that use the dot for the otherwise part as well. That added to the confusion.

I'll close this PR.

[schoeberl]

Thank you for pointing this out. Yes, I should be more consistent in the book. I will fix this. The issue is that it usually works without the '.' and therefore looks better. However, there are cases where the Scala compiler cannot infer that dot.

[valdaarhun]

The issue is that it usually works without the '.' and therefore looks better.

Right.

However, there are cases where the Scala compiler cannot infer that dot.

I see. I wonder why that is. Could it be a bug in Chisel? If it fails to infer the dot in some cases, is it safer to omit the dot?

[schoeberl]

It is not a bug in Chisel, it is a Scala feature that one can use methods as infix notation.

[valdaarhun]

Got it. It makes sense to me now. Thanks!