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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.
Also it doesn't check if doubling will cause int overflow.
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
It doesn't change the question at all. Whether you pass an lvalue by
const&or not doesn't change the behavior, as both value categories can bind to anything. On top of that, look at the return type of the function.This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution