siddhant3030
Function body is nested too deep
I have a case statement that is failing in credo. Giving me this error
“Function body is nested too deep” I know we can use “with” here but I’m failing to use it correctly
case NaiveDateTime.from_iso8601(valid_time) do
{:ok, datetime} ->
case Somefunction(which give me true or false) do
true -> true
false -> false
end
{:error, _} ->
"datetime is not valid"
end
Guide me
Marked As Solved
lucaong
As you are mapping the return value of the function to itself, you can just avoid the inner case:
case NaiveDateTime.from_iso8601(valid_time) do
{:ok, datetime} ->
Somefunction(which give me true or false)
{:error, _} ->
"datetime is not valid"
end
In this case, I don’t think that with would help (but it might, depending on the code outside the outer case statement, which we don’t see).
Also Liked
mudasobwa
In this particular case, @lucaong already provided the best suggestion. In general, we usually introduce a private function with several clauses in such a case.
valid_time
|> NaiveDateTime.from_iso8601()
|> do_validate_instead_of_case()
[...]
defp do_validate_instead_of_case({:ok, datetime}) do
case Somefunction(which give me true or false) do
...
end
end
defp do_validate_instead_of_case({:error, _}),
do: "datetime is not valid"
Sebb
learn to use with correctly
siddhant3030
Thanks :).
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