LDAP is a protocol for querying user directories. For example, Active Directory or Novell eDirectory both support LDAP. It is also, to a degree a syntax for doing such queries, like how SQL is a querying language for querying databases. An LDAP command could look like (givenName=Mike) And it would return all Mikes in the … Read more
As you can see this doesn’t work under these circumstances because when compiling, one has to make sure that all properties are initialized before using the struct/enum/class. You can make another initializer a requirement so the compiler knows that all properties are initialized: protocol Car { var wheels : Int { get set } // … Read more
The rule of thumb here is how many clients would like to be notified of an event. If it’s mainly one object (e.g. to dismiss a view or to act upon a button clicked, or to react to a failed download) then you should use the delegate model. If the event you emit may be … Read more
If you directly implement Equatable on a protocol, it will not longer be usable as a type, which defeats the purpose of using a protocol. Even if you just implement == functions on protocols without Equatable conformance, results can be erroneous. See this post on my blog for a demonstration of these issues: Swift Protocols … Read more
the complete description of bittorrent protocol: http://jonas.nitro.dk/bittorrent/bittorrent-rfc.html
The WhatsApp Architecture Facebook Bought For $19 Billion explains the architecture involved in design of whatsapp. Here is the general explanation from the link WhatsApp server is almost completely implemented in Erlang. Server systems that do the backend message routing are done in Erlang. Great achievement is that the number of active users is managed … Read more
This was answered by an official Swift developer (Slava_Pestov) on the Swift forums. Here is the summary: You should use AnyObject (protocol SomeProtocol: AnyObject). AnyObject and class are equivalent. There is no difference. class will eventually be deprecated.
Yes you can. But you never put func in front of init: protocol Serialization { init(key keyValue: String, jsonValue: String) }
“A var in a protocol with only get isn’t just a let?” No. A let indicates a constant. But that is not the case here. Consider the following: protocol SomeProtocol { var someProperty: String { get } } class SomeClass : SomeProtocol { var someProperty: String = “” func cla () { someProperty = “asd” … Read more
I don’t know if you are still looking for an answer to this, but the way to do it is to remove the function from the protocol definition, cast your object to Foo and then call the method on it: protocol Foo { // func testPrint() <- comment this out or remove it } extension … Read more