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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
啊这这这这。。。。
Yup that is absolutely correct. I made this long time ago and i didn't know that at that time.
Good observation either way, thx for commenting :)
pin.matches already returning boolean and you are not processing anyting else in either code blocks. I read this code like: If TRUE is TRUE then return TRUE, if FALSE is FALSE then return FALSE. :)
I guess it won't work in all cases
eg:
equalsIgnoreCase("(123) 456-7890") => returns true
equalsIgnoreCase("(987) 654-3210") => returns false
and I don't understand why you did it. Please explain to me