[ceronman]

I think this exact problem is what makes currying in JS and dynamically typed languages not very practical.

In JS is even worse because of the weak typing, if by mistake you get a curried function instead of a value, JS will happily operate on it giving you things like "hellofunction () {}". When you realize that there is a problem, it would be hard to find the actual cause of the error.

I think this is the reason why dynamic functional languages such as Clojure don't use auto-currying. I a static typed world, like Haskell's this is not a problem at all.

Partial application on the other hand is very useful and practical in JS and other dynamic languages.

[chrisweekly]

I beg to differ. Auto-currying (eg via Ramda) is awesome, powerful, and pragmatic.