Re: Enum.repeat/2

[Wojtek Mach]

iex(1)> List.duplicate(:something, 5)

[:something, :something, :something, :something, :something]

:-)

Hi there,

I would like to know your opinion about an `Enum.repeat/2` function. In test, I notice often that I write:

Enum.map(1..5, fn(_) ->  :something end)
[:something, :something, :something, :something, :something]

or 

for (_ Enter code here... <- 1..5), do: :something
=> [:something, :something, :something, :something, :something]

As I am not interested in the value of the input, I think a `Enum.repeat/2` function would be more efficient:

Enum.repeat(5, fn -> :something end)
=> [:something, :something, :something, :something, :something]

I am aware that `Enum.times/2` is deprecated in the past in favour of ranges. I want to highlight that in that function, the value was passed to the function.

What is your take? Or perhaps I overlooked a function?

[Hylke Alons]

Hah, this is great! thanks!

[Ben Wilson]

You can sort of do this with `Stream.repeatedly(fn -> :something end) |> Enum.take(5)`. It's a little longer, although it reads rather nicely.