Is that intentional?

Yes. The range operator is intended to be efficient for the majority of every day use cases.

As you've already discovered, if you need to iterate infinite precision integers, you can easily use the c-style alternative.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^3: c-style for loop versus list for loop, and bigint by BrowserUk
in thread c-style for loop versus list for loop, and bigint by AR

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