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Erlang访问记录的值
-module(helloworld). -export([start/0]). -record(person, {name = "", id}). start() -> P = #person{name = "John",id = 1},
Erlang tuple_to_list
-module(helloworld). -export([start/0]). start() -> io:fwrite("~w",[tuple_to_list({1,2,3})]).
Erlang list_to_tuple
-module(helloworld). -export([start/0]). start() -> io:fwrite("~w",[list_to_tuple([1,2,3])]).
Erlang is_tuple函数
-module(helloworld). -export([start/0]). start() -> P = {john,24,{june,25}} , io:fwrite("~w",[is_tuple(P)]).
Erlang元组
-module(helloworld). -export([start/0]). start() -> P = {john,24,{june,25}} , io:fwrite("~w",[tuple_size(P)]).
Erlang映射remove
-module(helloworld). -export([start/0]). start() -> Lst1 = [{"a",1},{"b",2},{"c",3}],
Erlang映射values
-module(helloworld). -export([start/0]). start() -> Lst1 = [{"a",1},{"b",2},{"c",3}],
Erlang映射put
-module(helloworld). -export([start/0]). start() -> Lst1 = [{"a",1},{"b",2},{"c",3}],
Erlang映射merge
-module(helloworld). -export([start/0]). start() -> Lst1=[{"a",1},{"b",2},{"c",3}],
Erlang映射keys
-module(helloworld). -export([start/0]). start() -> Lst1 = [{"a",1},{"b",2},{"c",3}],
Erlang映射is_key
-module(helloworld). -export([start/0]). start() -> Lst1 = [{"a",1},{"b",2},{"c",3}],
Erlang映射get
-module(helloworld). -export([start/0]). start() -> Lst1 = [{"a",1},{"b",2},{"c",3}],
Erlang映射find
-module(helloworld). -export([start/0]). start() -> Lst1 = [{"a",1},{"b",2},{"c",3}],
Erlang映射from_list
-module(helloworld). -export([start/0]). start() -> Lst1 = [{"a",1},{"b",2},{"c",3}],
Erlang映射
-module(helloworld). -export([start/0]). start() -> M1 = #{name=>john,age=>25}, io:fwrite("~w",[map_size(M1)]).
Erlang二进制split_binary()函数
-module(helloworld). -export([start/0]). start() -> io:fwrite("~p~n",[split_binary(<<1,2,3,4,5>>,3)]).