AFAIK, In swift, calling the default initialiser of classes/structs will initialise everything to
In C (socket programming for example) sometimes memset is used to set everything to 0 before using the struct. Do I need to use memset in swift too or is fine the way I wrote it?
(BTW, In this case
memset is used because
hints should be set to 0 except below 2 parameters. Non 0 (garbage, etc) will have side effects on
res when calling
struct addrinfo hints, *res; int status; memset(&hints, 0, sizeof hints); hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; status = getaddrinfo(NULL, MYPORT, &hints, &res);
var res = UnsafeMutablePointer<addrinfo>() var hints = addrinfo() hints.ai_family = AF_UNSPEC hints.ai_socktype = SOCK_STREAM let status = getaddrinfo(nil, MYPORT, &hints, &res)
From the Xcode 6.3 release notes:
Imported C structs now have a default initializer in Swift that initializes all of the struct's fields to zero.
which means that
var hints = addrinfo()
initializes all fields of
struct addrinfo to zero and there is no need to call