Improve perfomance for map updates

Author: kpy3

modules/openapi-generator/src/main/resources/erlang-server/api.mustache

@@ -179,7 +179,7 @@ populate_request_params(_, [], Req, _, Model) ->
 populate_request_params(OperationID, [ReqParamName | T], Req0, ValidatorState, Model0) ->
     case populate_request_param(OperationID, ReqParamName, Req0, ValidatorState) of
         {ok, V, Req} ->
-            Model = maps:put(ReqParamName, V, Model0),
+            Model = Model0#{ReqParamName => V},
             populate_request_params(OperationID, T, Req, ValidatorState, Model);
         Error ->
             Error

modules/openapi-generator/src/main/resources/erlang-server/server.mustache

@@ -33,12 +33,12 @@ get_cowboy_config(LogicHandler, ExtraOpts) ->
     maps:fold(fun get_cowboy_config/3, DefaultOpts, ExtraOpts).
 
 get_cowboy_config(env, #{dispatch := _Dispatch} = Env, AccIn) ->
-    maps:put(env, Env, AccIn);
+    AccIn#{env => Env};
 get_cowboy_config(env, NewEnv, #{env := OldEnv} = AccIn) ->
     Env = maps:merge(OldEnv, NewEnv),
-    maps:put(env, Env, AccIn);
+    AccIn#{env => Env};
 get_cowboy_config(Key, Value, AccIn) ->
-    maps:put(Key, Value, AccIn).
+    AccIn#{Key => Value}.
 
 get_default_dispatch(LogicHandler) ->
     Paths = {{packageName}}_router:get_paths(LogicHandler),