fix off-by-one error

[bmusin]

Fixes#47325.

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[steveklabnik]

Nice catch, thank you!

@bors: r+ rollup

[bors]

📌 Commit 0e9dde9 has been approved by steveklabnik

[nixpulvis]

Maybe use an inclusive range to be more clear?

[bmusin]

@nixpulvis, you mean 0..10?

[nixpulvis]

Nope, though now that I'm playing with it it looks like it's experamental and kinda a mess imho, see #28237.

Inclusive ranges (in this context) include the last element as well as the rest.

[nixpulvis]

I would however strongly encourage a change to 0..10, since it's helpful to have the same number in the description and the code.

[varkor]

This change is now incorrect. The documentation says:

Let's write the numbers one through ten to a [TcpStream]:

The code now writes the numbers from zero through nine. You should add one to i in each case. (This will be cleaner with the inclusive range syntax, but as it's not stabilised yet, it's best not to include it.)

[bmusin]

@varkor, you meant this?

[nixpulvis]

@varkor oh nice catch, I should have read the docs more carefully before suggesting 0..10. Still I think this looks the best.

[shepmaster]

Looks great @bmusin! Please go ahead and squash these commits and we will be good to merge!

[bmusin]

Squashed.

[shepmaster]

Thanks!

@bors: r+ rollup

[bors]

📌 Commit cee295e has been approved by shepmaster