chrisdel101
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
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kokolegorille
The error is here… == not =
chrisdel101
Wow, and here I thought I was
pattern matching. Didn’t know there was==in Elixir.kokolegorille
You should use == when You want to compare, and = when You want to assign, or pattern match
sabiwara
Pattern-matching would be done with
caserather thancond:condis more like a chain ofif/else ifkokolegorille
It is also possible to write an anonymous function with multiple heads.
No need for a case
UPDATE: it should be {_, 1} → “hello”