chrisdel101
How to use conditional inside Enum iterator - error:cannot invoke remote function Kernel.elem/2 inside a match
When first or last item in list is found, do something.
Even simply trying to check for this fails with error. How can I do it? Below is checking if item tuple index 1 is 0 (first item in list).
l = [owner: 0, developer: 1, admin: 2, editor: 3, contributor: 4, viewer: 5]
Enum.map(l, fn x ->
cond do
#check if tuple elem is 0
elem(x,1) = 0->
"hello"
end
end)
end
Marked As Solved
kokolegorille
The error is here… == not =
Also Liked
kokolegorille
It is also possible to write an anonymous function with multiple heads.
Enum.map(l, fn
{_, 0} -> "hello"
_ -> ...
end)
No need for a case 
UPDATE: it should be {_, 1} → “hello”
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