I have a question about the code implementation

[xiangwenhu]

Since arr is only used to get the arr.length used inside idx, why not just pass the len variable in?

edit @doowb I used chrome to translate this and made an attempt to retype the subject and question in English.

[doowb]

@xiangwenhu I don't think there is any reason to use arr directly in the idx function. If you'd like to submit a PR to pass the len variable into idx and change arr to len, that would be appreciated.

Also, I edited the original post to English since it's easier for us (as maintainers) to communicate with English and will help us if we're searching GitHub for answers.

[xiangwenhu]

thank you, i will submit a PR later.

[jonschlinkert]

sorry for taking so long to merge!

and thank for the PR!