Pass by reference, do not wrap needlessly

// Bad
takesCallback(function (data) {
// Literally all this function does
processData(data)
}

// Good
takesCallback(processData)

I see this all the time, especially with jr devs.

God it annoys me so much when people don't do that. Also not enough people know about partial function application

@brukernavn32 agreed. I have been teaching my co-workers more functional programming patterns.

Need moar memory..

Thing is, most people switching from a OOP language (eg Java /C#) usually thinks structurally like the bad example.

What you might want to highlight is that a function is an object in javascript. In fact, everything is an object, that's how it works.

@kileak primitives aren't objects ;) I know what you're saying though

True @kileak. In most modern languages functions are first class objects (python, js etc). IMO that's what makes it fun though.

@ecmawizard haha well yeah. But null and undefined being objects kinda blew my mind when I found out.

@kileak null and undefined are primitives.