From dd7dd9b1df1c77a62c49ca6e2620f6757b5b0734 Mon Sep 17 00:00:00 2001 From: RJ Dellecese Date: Wed, 18 Dec 2019 22:04:16 -0500 Subject: Add dynamic.element for decoding tuples --- src/gleam_stdlib.erl | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'src/gleam_stdlib.erl') diff --git a/src/gleam_stdlib.erl b/src/gleam_stdlib.erl index 8a4a290..abfdfbb 100644 --- a/src/gleam_stdlib.erl +++ b/src/gleam_stdlib.erl @@ -6,7 +6,7 @@ atom_create_from_string/1, atom_to_string/1, map_get/2, iodata_append/2, iodata_prepend/2, identity/1, decode_int/1, decode_string/1, decode_bool/1, decode_float/1, decode_thunk/1, decode_atom/1, - decode_list/1, decode_field/2, parse_int/1, parse_float/1, compare_strings/2]). + decode_list/1, decode_field/2, decode_element/2, parse_int/1, parse_float/1, compare_strings/2]). expect_equal(Actual, Expected) -> ?assertEqual(Expected, Actual). expect_not_equal(Actual, Expected) -> ?assertNotEqual(Expected, Actual). @@ -70,6 +70,18 @@ decode_field(Data, Key) -> decode_error_msg(io_lib:format("a map with key `~p`", [Key]), Data) end. +decode_element(Data, Position) -> + case catch element(Position + 1, Data) of + {'EXIT', _Reason} -> + {error, nil}; + + Value -> + {ok, Value}; + + _ -> + {error, nil} + end. + parse_int(String) -> case string:to_integer(binary:bin_to_list(String)) of {Integer, []} -> -- cgit v1.2.3