How to use return statement with if condition in elixir?

Questions & Help Questions
5

Just to add to the spectrum (i.e. I’m not recommending this) I see Greg’s suggestion as a “cleaned up” version of

a = 20 
b = 10

result = 
  case {a,b} do
    {c,c} -> "equal"
    {c,d} when c > d -> "a"
    {c,d} when c < d -> "b"
  end
reply = {:ok, result}

IO.inspect(reply)

which could also be written as

a = 20 
b = 10

result = 
  case {a,b} do
    _ when a > b -> "a"
    _ when a < b -> "b"
    _ -> "equal"
  end
reply = {:ok, result}

IO.inspect(reply)

leading to the accepted solution

a = 20 
b = 10

result = 
  cond do
    a > b -> "a"
    a < b -> "b"
    true -> "equal"
  end
reply = {:ok, result}

IO.inspect(reply)

And if do always has a “second” value it evaluates to when the condition is false - it will return nil

a = 10 
b = 20

value1 = 
  if a > b do
    "a"  
  end
  
value2 = 
  cond do
    a > b -> "a"
    true -> nil
  end

IO.inspect({value1,value2})

> {nil, nil}