Expand support for methods used as iteratees.

[jdalton]

Methods like _.sample, _.first, _.initial, _.last, & _.rest have guards to support being used as an iteratee for methods like _.map. I think it'd be great if this was expanded to other methods that can operate with just 1 param, like _.template, _.sortBy, _.uniq, _.flatten, _.min, _.max, & so on. Support can be added to some by adding a simple guard check while others may require a helper.

[amZotti]

I'll look into this

[dotpao]

Any update here in order to allow _.uniq as _.map iteratee?

[jgonggrijp]

I suggest adding this only to the functions for which a simple guard is sufficient. That helper looks like a pessimization as well as a potentially serious breaking change.