Comment by jpulec

I think lambda syntax can be a bit cumbersome, but that aside what I really miss is a clean syntax for chaining functional operations. So often I find myself thinking about data in terms of 'pipelines'. i.e. in JS:

  _.chain(values)
   .map(() => {})
   .flatten()
   .compact()
   .uniq()
   .value()

vs Python where doing the same thing becomes either a nested mess of function calls or comprehensions or a for loop.