otuv
Case with greater than
Hi,
Simple thing but I cannot seem to find it anywhere. How do I do a case with greater than?
As in:
case Kernel.length my_list do
0 ->
{ :ok, :no_data }
> 0 ->
{ :ok, my_list }
_ ->
{ :error, :some_general_error }
Or should I structure my code some other way?
Marked As Solved
axelson
You’d want to use a guard in this case. Which would look like this
case Kernel.length(my_list) do
0 ->
{ :ok, :no_data }
n when n > 0 ->
{ :ok, my_list }
_ ->
{ :error, :some_general_error }
Although Kernel.length/1 would never return a negative value so you’d probably be better off with Enum.empty?/1 for the code you’ve listed.
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otuv
I decided to go for the empty? way. Thanks.
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