[julia-users] Modifying large vectors of repeated data

[Terry Seaward]

Hi,

I have a large vector of repeated data (dates in my case, but I'd like to 
keep this generic). In R I can apply a function to the elements efficiently 
using something like this:

myfun <- function(x, fun, ...) {
    ux <- unique(x); 
    fun(ux, ...)[match(x, ux)]
}

myfun(x, as.character)

So basically apply the function to the unique elements then use match to 
recreate x. 

What's the best way to do this in Julia?

-- Terry