What's the difference between io.sockets.emit and socket.broadcast.emit? Is it only that broadcast emits to everyone BUT the socket that sends it? ...

Apparently, this is harder to find than I thought it would be. And it even is so simple... 16 Answers ...

I have two models restaurant and user that I want to perform a has_and_belongs_to_many relationship. 4 Answers ...

... not interested in the following answers because they scan the whole array and don't stop when they find the first occurrence: ...

...g, layout config, etc.) that involve building up giant XML trees in memory and then "querying" those same trees for information. This takes both memory (storing the trees) and CPU (parsing the trees). Some of these (especially the layout tree) are huge. Also, unless caching is on, these tree are ...

...s huge. Even a 2 rooks + king has something like 22 possible next moves. And if it takes 6 moves to mate, you're looking at 12,855,002,631,049,216 moves. Do the math on opening moves. While there's only about 20 opening moves, there are something like 30 or so second moves, so by the third move ...

What is the difference between origin and upstream on GitHub ? 1 Answer 1 ...

...to the source. If the changes affect functionality of the overall module, and may be useful to others, you may want to contribute to the original source on github and look for the change to be implemented. If this is proprietary functionality that is needed, and would not help the development of t...

After running the bundle install command, 'Gemfile.lock ' is created in the working directory. What do the directives inside that file mean? ...

... I have have this problem a number of times and there seems to be 2 ways of fixing it (shown below). You can use either of these properties to fix the rendering, or both at the same time. Backface visibility hidden fixes the problem as it simplifies the animation to j...