Count instances of each unique integer in a vector in 1 line of code?

Question

Is there a slick way to rewrite this Julia function, perhaps using just 1 line of code, without making it much slower? (I just started using Julia. It\'s great!) K

Answer 1

I haven't tested the performance, but using the hist function should work:

hist(zd,0.5:K+0.5)[2]

gives:

5-element Array{Int64,1}: 1 4 1 0 0

or, if the zeros are unimportant, just use

hist(zd)[2]
3-element Array{Int64,1}:
 1
 4
 1