3===3 && doSomething()

[JoaoFOliveira]

Was looking through index.js and found

   (oldValue !== newValue) && (changes.push(['analogChange', newValue])); 

and

   (oldValue !== newValue) && (changes.push([k + (newValue ? 'Press' : 'Release')]));

and so forth.

Noticed it was not a statement nor a function call, but something like (i.e. true/false && execute())

Some JS linting notices this and throws some warnings/errors like

   Expected an assignment or function call and instead saw an expression.

and after some digging found this to be more of an readability issue, as tools like uglify.js turn "if(this) {that()}" into "this && that()"

Brief discussion about this in

airbnb/javascript#52

[JoaoFOliveira]

Also,

   !!(secBtns & 0x10),

what is "&" supposed to do here? Is it missing a twin?

[marcooliveira]

I did that on purpose to make the code smaller. Don't like seeing a lot of lines when I don't need it. As this was sort of a hack, I'm not even sure if I changed the .jshintrc to suppress that kind of warning.

As for the "missing twin" &, it's a bitwise AND.