Initial upload

elixir/kitchen-calculator/lib/kitchen_calculator.ex

@@ -0,0 +1,31 @@
+defmodule KitchenCalculator do
+  def get_volume(volume_pair) do
+    elem(volume_pair, 1)
+  end
+
+  def to_milliliter(volume_pair) do
+    volume = get_volume(volume_pair)
+    case elem(volume_pair, 0) do
+        :milliliter -> volume
+        :fluid_ounce -> 30 * volume
+        :cup -> 240 * volume
+        :teaspoon -> 5 * volume
+        :tablespoon -> 15 * volume
+        _ -> -1
+    end
+  end
+
+  def from_milliliter({:milliliter, volume}, unit) do
+    case unit do
+        :cup -> volume / 240
+        :fluid_ounce -> volume / 30
+        :teaspoon -> volume / 5
+        :tablespoon -> volume / 15
+        _ -> volume
+    end 
+  end
+
+  def convert({unit1, volume}, unit2) do
+    from_milliliter({:milliliter, to_milliliter({unit1, volume})}, unit2)
+  end
+end