elixir check is nil

To check if a value in Elixir is nil, you can use the is_nil/1 function. Here's an example:

value = nil
if is_nil(value) do
  IO.puts("The value is nil")
else
  IO.puts("The value is not nil")
end

In this example, we assign the value nil to the variable value. We then use the is_nil/1 function to check if the value is nil. If it is, we print "The value is nil". Otherwise, we print "The value is not nil".

Alternatively, you can use pattern matching to check if a value is nil. Here's an example:

case value do
  nil ->
    IO.puts("The value is nil")
  _ ->
    IO.puts("The value is not nil")
end

In this example, we use a case statement to pattern match against the value. If the value is nil, we print "The value is nil". Otherwise, we print "The value is not nil".

Both approaches achieve the same result, so you can choose the one that you find more readable or suitable for your specific use case.