# [1,2,3] |> f. doesn't work

#1

Try this:

``````f(x) = x^2
[1,2,3] |> f.
``````

with the dot, to map `f` over the array. It doesn’t work. Is this intended?

#2

Just got an explanation for this. The `.` affects `.( )`, not `f`.
Maybe one could define `.|>` for this usage? I think it would be convenient.

#3

`f.(args...)` is equivalent to `broadcast(f, args...)`, but `f.` by itself does not define a function. (Think of the `.` as modifying the function call operation `(...)` and not `f`.)

It should indeed be possible to do `x .|> f` at some point (hopefully 0.6): this should be equivalent to `broadcast(|>, x, f)`, which should do what you want. Currently, my PR for dotted operations (https://github.com/JuliaLang/julia/pull/17623) doesn’t handle `|>`, but I should probably add this.

#4

Okay, I just added this to my #17623 PR; `[1,2,3] .|> (x->x+1)` now works.

#5

Great! Looking forward to 0.6.

Thanks.