diff options
| -rw-r--r-- | erts/doc/src/erlang.xml | 34 | ||||
| -rw-r--r-- | erts/preloaded/src/erlang.erl | 19 |
2 files changed, 53 insertions, 0 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index 1a97a84b42..2faa46d760 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -626,6 +626,22 @@ false</pre> {more,6}</pre> </desc> </func> + + <func> + <name name="delete_element" arity="2"/> + <fsummary>Delete element at index in a tuple</fsummary> + <type_desc variable="Index">1..tuple_size(<anno>Tuple1</anno>)</type_desc> + <desc> + <p> + Returns a new tuple with element at <c><anno>Index</anno></c> removed from + tuple <c><anno>Tuple1</anno></c>. + </p> + <pre> +> <input>erlang:delete_element(2, {one, two, three}).</input> +{one,three}</pre> + </desc> + </func> + <func> <name name="delete_module" arity="1"/> <fsummary>Make the current code for a module old</fsummary> @@ -1361,6 +1377,24 @@ os_prompt% </pre> when the process wakes up.</p> </desc> </func> + + <func> + <name name="insert_element" arity="3"/> + <fsummary>Insert an element at index in a tuple</fsummary> + <type_desc variable="Index">1..tuple_size(<anno>Tuple1</anno>) + 1</type_desc> + <desc> + <p> + Returns a new tuple with element <c><anno>Term</anno></c> insert at position + <c><anno>Index</anno></c> in tuple <c><anno>Tuple1</anno></c>. + All elements from position <c><anno>Index</anno></c> and upwards are subsequently + pushed one step higher in the new tuple <c><anno>Tuple2</anno></c>. + </p> + <pre> +> <input>erlang:insert_element(2, {one, two, three}, new).</input> +{one,new,two,three}</pre> + </desc> + </func> + <func> <name name="integer_to_list" arity="1"/> <fsummary>Text representation of an integer</fsummary> diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl index 51a190b095..739fdde10a 100644 --- a/erts/preloaded/src/erlang.erl +++ b/erts/preloaded/src/erlang.erl @@ -79,6 +79,7 @@ -export([bump_reductions/1, byte_size/1, call_on_load_function/1]). -export([cancel_timer/1, check_old_code/1, check_process_code/2, crc32/1]). -export([crc32/2, crc32_combine/3, date/0, decode_packet/3]). +-export([delete_element/2]). -export([delete_module/1, demonitor/1, demonitor/2, display/1]). -export([display_nl/0, display_string/1, dist_exit/3, erase/0, erase/1]). -export([error/1, error/2, exit/1, exit/2, external_size/1]). @@ -88,6 +89,7 @@ -export([garbage_collect_message_area/0, get/0, get/1, get_keys/1]). -export([get_module_info/1, get_stacktrace/0, group_leader/0]). -export([group_leader/2, halt/0, halt/1, halt/2, hash/2, hibernate/3]). +-export([insert_element/3]). -export([integer_to_list/1, iolist_size/1, iolist_to_binary/1]). -export([is_alive/0, is_builtin/3, is_process_alive/1, length/1, link/1]). -export([list_to_atom/1, list_to_binary/1, list_to_bitstr/1]). @@ -529,6 +531,14 @@ date() -> decode_packet(_Type, _Bin, _Options) -> erlang:nif_error(undefined). +%% delete_element/2 +-spec erlang:delete_element(Index, Tuple1) -> Tuple2 when + Index :: pos_integer(), + Tuple1 :: tuple(), + Tuple2 :: tuple(). +delete_element(_Index, _Tuple1) -> + erlang:nif_error(undefined). + %% delete_module/1 -spec delete_module(Module) -> true | undefined when Module :: module(). @@ -820,6 +830,15 @@ hash(_Term, _Range) -> hibernate(_Module, _Function, _Args) -> erlang:nif_error(undefined). +%% insert_element/3 +-spec erlang:insert_element(Index, Tuple1, Term) -> Tuple2 when + Index :: pos_integer(), + Tuple1 :: tuple(), + Tuple2 :: tuple(), + Term :: term(). +insert_element(_Index, _Tuple1, _Term) -> + erlang:nif_error(undefined). + %% integer_to_list/1 -spec integer_to_list(Integer) -> string() when Integer :: integer(). |