Erlang 模式匹配长生不老药记录Aganist结构
有没有办法将记录与结构进行模式匹配?例如,给定以下记录和结构Erlang 模式匹配长生不老药记录Aganist结构,erlang,record,elixir,Erlang,Record,Elixir,有没有办法将记录与结构进行模式匹配?例如,给定以下记录和结构 struct = %User{name: "", twitter:""} record = {User, "mossplix ", "@mossplix"} 您需要手动匹配字段 defmodule Test do def foo(%User{name: name, twitter: twitter}, {User, name, twitter}) do IO.puts "match :)" end def fo
struct = %User{name: "", twitter:""}
record = {User, "mossplix ", "@mossplix"}
您需要手动匹配字段
defmodule Test do
def foo(%User{name: name, twitter: twitter}, {User, name, twitter}) do
IO.puts "match :)"
end
def foo(_struct, _record) do
IO.puts "no match :("
end
end
或者您需要先将其转换为结构,然后将两者匹配
defmodule Test do
def foo(struct, record) do
do_foo struct, user_record_to_struct(record)
end
defp user_record_to_struct({User, name, twitter}) do
%User{name: name, twitter: twitter}
end
defp do_foo(struct, struct) do
IO.puts "match :)"
end
defp do_foo(_struct1, _struct2) do
IO.puts "no match :("
end
end
既然你是从“AFAIK”开始的,我只想确认这个答案是完全正确的谢谢,@JoséValim将其移除;-)