Loading collection data...
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.
This comment is hidden because it contains spoiler information about the solution
why should i return an undocumented -1 in any case and why should it be best practice? Why should i implement any valid Triangle Checks without someone telling me to do so? Isn´t that possibly both wrong? please explain. greetz