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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.
如果PHP的内置函数都不够好，那凭什么要求我做得更好XD。
nice
looks like it's not:
https://stackoverflow.com/a/19974533/3002731
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No, only for >= 0. But negative binaries is not common and it is not tested. But, yes, it is not tested and do not work
If bindec gives right results with negative binaries?
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This one didn't pass for me. median needed to be a float (52.5) where my answer gave 52. Even casting as a float wouldn't work.