diff --git a/functional_functions.rb b/functional_functions.rb
index 9994488..28b3597 100644
--- a/functional_functions.rb
+++ b/functional_functions.rb
@@ -6,3 +6,36 @@ def func_find_all(container_obj, attribute, filter_by)
   "return #{container_obj}.stream().filter(s -> #{filters.join "&&"}).collect(Collectors.toList());"
 
 end
+
+def find_whatever_of_something(container_obj, attribute, filter_by, aggregate_func)
+  filters = filter_by.map do |x|
+    "s.get#{attribute}() #{x.comparator} #{x.value}"
+  end
+  # TODO: Consider also having an "or" here
+  "return #{container_obj}.stream().filter(s -> #{filters.join "&&"}).#{aggregate_func}();"
+end
+
+def find_one(container_obj, attribute, filter_by)
+  filters = filter_by.map do |x|
+    "s.get#{attribute}() #{x.comparator} #{x.value}"
+  end
+  # TODO: Consider also having an "or" here
+  "return #{container_obj}.stream().filter(s -> #{filters.join "&&"}).findAny().orElse(null);"
+end
+
+def find_best_value(container_obj, attribute, filter_by, min_or_max, based_on)
+  filters = filter_by.map do |x|
+    "s.get#{attribute}() #{x.comparator} #{x.value}"
+  end
+  # TODO: Consider also having an "or" here
+  "return #{container_obj}.stream().filter(s -> #{filters.join "&&"}).mapToInt(s -> s.get#{based_on}()).#{min_or_max};"
+end
+
+def find_best_object(container_obj, attribute, filter_by, min_or_max, based_on)
+  filters = filter_by.map do |x|
+    "s.get#{attribute}() #{x.comparator} #{x.value}"
+  end
+  # TODO: Consider also having an "or" here
+  "return #{container_obj}.stream().filter(s -> #{filters.join "&&"}).#{min_or_max}(Comparator.comparing(#{based_on.type}.get#{based_on.variable}()));"
+end
+