Here is the code:
void (*)(const dpp::slashcommand_t &event) operator[](const std::string &index);
When I compile this, I get the following error message:
In file included from commands_controller.cpp:3,
from main.cpp:2:
commands_controller.h:28:12: error: expected unqualified-id before ‘)’ token
28 | void (*)(const dpp::slashcommand_t &event) operator[](const std::string &index);
Do you have any suggestion,that how could I resolve this error?
CodePudding user response：
When dealing with function pointers, use typdefs. The correct non-typedef syntax is:
void (*operator[](const std::string &index))(const dpp::slashcommand_t &event)
https://coliru.stacked-crooked.com/a/4eabda845ac15a54
Obviously, this is completely insane.
So instead, always use a typedef or alias:
using slash_fn_ptr = void (*)(const dpp::slashcommand_t &event);
slash_fn_ptr operator[](const std::string &index);