Delete element in an array for julia

Several of the other answers have been deprecated by more recent releases of Julia. I'm currently (Julia 1.1.0) using something like

function remove!(a, item)
    deleteat!(a, findall(x->x==item, a))
end

You can also use findfirst if you'd prefer, but it doesn't work if a does not contain item.

You can also go with filter!:

a = Any["D", "A", "s", "t"]
filter!(e->e≠"s",a)
println(a)

gives:

Any["D","A","t"]

This allows to delete several values at once, as in:

filter!(e->e∉["s","A"],a)

Note 1: In Julia 0.5, anonymous functions are much faster and the little penalty felt in 0.4 is not an issue anymore :-) .

Note 2: Code above uses unicode operators. With normal operators: ≠ is != and e∉[a,b] is !(e in [a,b])