Update traits.md

[Xmasreturns]

Changes to readability and some clarifications for beginners

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @nikomatsakis (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

Please see the contribution instructions for more information.

[tshepang]

The only nit I have is that those lines are overlong, at least as compared to the already existing ones, otherwise this is a 👍 from me.

[tshepang]

One more thing, please squash these 2 commits. Either that, or give them more meaningful commit messages.

[Xmasreturns]

@tshepang I used the edit button directly on the github file pages for these two commits, and I'm not familiar with git in shell, so I'm not sure how to squash the two together. That being said, I didn't look too hard for that function and added the second commit because it seemed like the right thing to do based on the autoresponse from rust-highfive.

[Xmasreturns]

Also, when you say the lines are overlong, do you mean number of characters per line of code or do you mean number of words per sentence?

[tshepang]

I meant characters per line.

[steveklabnik]

We do generally try to wrap to 80 characters, and squash things down into less commits. However, I try to be a bit less lax with newer contributors, and I know we talked on IRC about git being a bit hard, so I don't think, in this case, it's a huge deal. I'm about to do a lot of editing to the book over the next week or two anyway.

@bors: r+ rollup

[bors]

📌 Commit 88c407c has been approved by steveklabnik