Question

I found these work types of code:

hash_init.key       = &hash_key_lc;  

And

ls->handler = init_connection;

Here both hash_key_lc and init_connection are functions,but one is with & the other not,why?

UPDATE

so they are the same thing,but what’s the rational??

Answer 1

reference/deference on a function is treated as a language special case in c,as function deserves this kind of special case ,it can’t be passed by a certain value,you can only pass it by address/reference.