Re: [swift-users] Custom operators in a framework

ttp://github.com/Balancingrock >> Project: http://swiftfire.nl >> >> >> >> >> >>> On 03 Feb 2017, at 18:14, Jordan Rose <jordan_r...@apple.com> wrote: >>> >>> Operator declarations are actually public all the time, not internal

Re: [swift-users] Custom operators in a framework

; >>>> I.e. I have a: >>>> >>>> infix operator &= >>>> >>>> And when I use that from another module I get “Operator is not a known >>>> binary operator” >>>> >>>> Once I repeat the

Re: [swift-users] Swift 101: JSON or XML?

I do not think there is a ‘best’ answer. I would go with JSON though. Apple’s JSON solution is fast, but it has some minor limitations and usability is not “up there”. Then again there are third party solutions, for example my own SwifterJSON single-class framework that you can download from

Re: [swift-users] enum compare

Oh, I am not using the correct terminology, sorry. Enum’s don’t have “instances” right? Anyhow, I guess you get my drift… Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Swiftrien Project: http://swiftfire.nl > On 21 Jan 2017, at

Re: [swift-users] enum compare

The “==“ operation can only compare concrete instances of the enum. With “type == ACType.other” the right side is not an instance. as the associated value is missing. Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Swiftrien Project:

Re: [swift-users] SPM & Library with bridging header

20 Jan 2017, at 19:48, Rien via swift-users <swift-users@swift.org> wrote: > > I may be missing something here, so please bear with me... > > The client of the lib only has to see the headers that describe the lib, not > the headers of the files that were used to crea

Re: [swift-users] Casting function pointers

tp://github.com/Balancingrock Project: http://swiftfire.nl > On 25 Jan 2017, at 10:23, Rien via swift-users <swift-users@swift.org> wrote: > > I have a case where a callback has the following signature: > > @convention(c) (_ ssl: OpaquePointer?, _ num: UnsafeMutablePointer

Re: [swift-users] Callback in Swift

> On 25 Jan 2017, at 10:33, John Brownie wrote: > > Thanks, that does it for me, though I had to qualify the Unmanaged with a > type in the first part. > > Rien wrote: >> For the context I passed in: >> >>

[swift-users] Casting function pointers

I have a case where a callback has the following signature: @convention(c) (_ ssl: OpaquePointer?, _ num: UnsafeMutablePointer?, _ arg: UnsafeMutableRawPointer?) -> Int32 But to install this callback I have to use a c-function with this signature: SSL_CTX_callback_ctrl (OpaquePointer!, Int32,

Re: [swift-users] SPM: no such module - System Library Wrapper

com> wrote: > > Have a look at BlueSockets which does the same kind of thing: > > https://github.com/IBM-Swift/BlueSocket > https://github.com/IBM-Swift/BlueSSLService > > There's a wrapper around OpenSSL as well: > > https://github.com/IBM-Swift/OpenSSL.git > >

[swift-users] SPM: how to create cocoa xcode projects?

Just a quick question, > swift package init —type executable creates an xcode project with a main.swift. I want to create a macOS cocoa based application. How is that best achieved? Or is that not supported yet? Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com

Re: [swift-users] SPM: how to create cocoa xcode projects?

ding on a bunch of SPM packages? Rien. > >> On Jan 26, 2017, at 4:24 AM, Rien via swift-users <swift-users@swift.org> >> wrote: >> >> Just a quick question, >> >>> swift package init —type executable >> >> creates an xcode project

Re: [swift-users] Casting function pointers

Github: http://github.com/Balancingrock Project: http://swiftfire.nl > On 25 Jan 2017, at 19:37, Joe Groff <jgr...@apple.com> wrote: > > >> On Jan 25, 2017, at 1:23 AM, Rien via swift-users <swift-users@swift.org> >> wrote: >> >> I have a case

Re: [swift-users] SPM & Library with bridging header

t; >> And pkgConfig cannot be used on a non-system module. >> >> But without specifying the import search path, SPM cannot compile the c-code. >> >> Any suggestions? >> >> Regards, >> Rien >> >> Site: http://balancingrock.nl >>

[swift-users] Function conforming to a typealias

I want to create a few functions that all have the same signature. The signature is defined in a typealias Is there any way to shortcut the function definition, or alternatively ensure that the function signature will always be equal to the typealias? Examplecode: typealias Mysig = (Int,

Re: [swift-users] Function conforming to a typealias

. Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl > On 18 Feb 2017, at 12:05, Rien via swift-users <swift-users@swift.org> wrote: > > It feels a bit strange to write it like that, but

Re: [swift-users] Function conforming to a typealias

ion = (Int, Bool) -> String? > > let myGreatFunc1: Function = { _ in return nil /* or whatever you need there > */ } > let myGreatFunc2: Function = { _ in return nil } > > > > > -- > Adrian Zubarev > Sent with Airmail > > Am 18. Februar 2017 um 11:47

Re: [swift-users] Function conforming to a typealias

you’re trying to solve there but you could use it like this >> with closures: >> >> typealias Function = (Int, Bool) -> String? >> >> let myGreatFunc1: Function = { _ in return nil /* or whatever you need there >> */ } >> let myGreatFunc2: Function = {

Re: [swift-users] [swift-evolution] Plan to move swift-evolution and swift-users mailing lists to Discourse

> On 09 Feb 2017, at 18:29, Cihat Gündüz via swift-evolution > wrote: > > @Jan: Your arguments are very subjective if not even insulting and derogatory > to many people who invest a lot of time and effort in crafting those things > you despise so openly. Here are

Re: [swift-users] UnsafePointer to UInt64

egards, Martin > >> On 16 Feb 2017, at 14:27, Rien via swift-users <swift-users@swift.org> wrote: >> >> What would be the easiest (and fastest) way to convert a pointer to an >> (unsigned)integer? >> >> Ptr -> String -> Int >> >>

[swift-users] UnsafePointer to UInt64

What would be the easiest (and fastest) way to convert a pointer to an (unsigned)integer? Ptr -> String -> Int seems a bit cumbersome to me :-) Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl

Re: [swift-users] ambiguous minus operator

I don’t know about the candidates But the uptimeNanoseconds is a UInt64 and as such you should probably use substractWithOverflow. var a: UInt64 = 12 var b: UInt64 = 25 let result = UInt64.subtractWithOverflow(a, b) if result.overflow { print("Overflow") } else { let answer = result.0

[swift-users] SPM: Specify search paths?

I am still running into walls with SPM. Is there a way to specify the header and library search paths when using the Swift Package Manager? Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl

[swift-users] Migrating to SPM, best practise?

I have a small sockets based framework on Github (SwifterSockets). It was created before SPM existed. The next update is planned, and I want to move to SPM. 1) How to create a package around the old xcode project? 2) I am unsure how to move from the old git structure to the new. What would be

Re: [swift-users] Details of defer statement in Swift

The manual says this: https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/Statements.html A defer statement is used for executing code just before transferring program control outside of the scope that the defer statement appears in. The scope

Re: [swift-users] Set-uniqueness of instances with distinct hashValue

If you change the “==“ function to: func == (lhs: X, rhs: X) -> Bool { return (lhs.x == rhs.x) && (lhs.hashValue == rhs.hashValue) } then the example works as expected. Apple says this: “A hash value, provided by a type’s hashValue property, is an integer that is the same for any two

Re: [swift-users] Segmentation fault: 11 after updating codebase to Swift 3.0

I had a similar problem with Xcode 7.2. The work around I found then was to remove all source files from the project in the “target membership” except for the main.swift file. Then compile again, which will (of course) fail with normal errors. Then I added the files back in, presto, no more

Re: [swift-users] Overload Resolution of Binary Operators

I seem to remember that while it is possible to define, the compiler will yield an error if you try to use the functions (“cannot resolve”). Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Swiftrien Project: http://swiftfire.nl > On

Re: [swift-users] What is "binding" memory?

> On 02 Nov 2016, at 18:07, Manfred Schubert via swift-users > wrote: > > Am 01.11.2016 um 21:40 schrieb Andrew Trick : >> >> I’m not sure I like the “prepares the memory” language myself. Binding >> memory communicates to the compiler that the memory

Re: [swift-users] What is "binding" memory?

> On 03 Nov 2016, at 15:16, Manfred Schubert via swift-users > wrote: > > >> Am 02.11.2016 um 18:37 schrieb Rien : >> var rawPtr = UnsafeMutableRawPointer.allocate(bytes: 2, alignedTo: 0) var widePtr = rawPtr.bindMemory(to:

Re: [swift-users] What is "binding" memory?

> On 03 Nov 2016, at 23:58, Manfred Schubert via swift-users > wrote: > > Am 03.11.2016 um 15:41 schrieb Rien : >> >> Ah, but that is not the case. >> >> It is important to differentiate between the “gateway” to the memory and the >> memory area

Re: [swift-users] Understanding pass-by-value

> On 04 Nov 2016, at 13:59, Ryan Lovelett via swift-users > wrote: > > struct Foo { > init(from buffer: Data) { > bar = integer(withBytes: Array(buffer[4..<6])) > baz = integer(withBytes: Array(buffer[6..<8])) > ... > } > > let d = Data(count: Int(3e+8)) >

Re: [swift-users] What is "binding" memory?

The way I understand it, it prepares a memory structure that refers to the ‘raw memory’ such that it can be used to access the referenced memory according to the type ‘bound’ to. Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github:

Re: [swift-users] Implicitly capture a mutating self

How about using: UnsafeMutablePointer ? Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Swiftrien Project: http://swiftfire.nl > On 16 Dec 2016, at 09:10, Richard Wei via swift-users > wrote: > > Capturing

Re: [swift-users] Implicitly capture a mutating self

, at 02:49, Zhao Xin <owe...@gmail.com> wrote: >> >> What is the type of self? If it is a class, try [unowned self]. >> >> Zhaoxin >> >> >> >> >> >> >> On Fri, Dec 16, 2016 at 4:33 PM, Rien via swift-users >> <sw

Re: [swift-users] C-function not found by linker

://github.com/Swiftrien Project: http://swiftfire.nl > On 11 Jan 2017, at 10:28, Rien via swift-users <swift-users@swift.org> wrote: > > My project uses openSSL and that works fine. > > I needed one specific function that cannot be accessed from Swift directly, > so I created

Re: [swift-users] Exclamation mark's in swift parameter listings?

://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Swiftrien Project: http://swiftfire.nl > On 10 Jan 2017, at 18:14, Joe Groff <jgr...@apple.com> wrote: > > >> On Jan 9, 2017, at 11:19 PM, Rien via swift-users <swift-users@swift.org> >> w

Re: [swift-users] getResourceValue

URL is the same as NSURL in Swift 3 Foundation -> NSURL -> getResourceValue. If you use xcode, open up the Help -> Documentation and API reference The do a search for getResourceValue. Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github:

Re: [swift-users] Weird protocol behaviour.

M, Howard Lovatt via swift-users >>> <swift-users@swift.org> wrote: >>> >>> I suspect a compiler bug since A is a P. The equivalent in Java works: >>> >>> interface P {} >>> class X implements P {} >>> >>> void foo(A

[swift-users] UnsafePointer and C-String

The documentation at https://developer.apple.com/library/content/documentation/Swift/Conceptual/BuildingCocoaApps/InteractingWithCAPIs.html shows that it is possible to use String where an UnsafePointer is needed. API calls to C that need a char* are translated to UnsafePointer. It follows that

Re: [swift-users] Compiler should issue a warning when a subclass implementation with default values matches a parent implementation without them

As you know. there is no ambiguity, no warnings needed. (The parameter is part of the identifier of the function) Imo, this request falls into the category “do as I think, not as I say”. That is a discussion without end. Personally I am against ANY warnings of this kind. The reason is that I

Re: [swift-users] Using 'SomeProtocol' as a concrete type conforming to protocol 'SomeProtocol' is not supported

As to the why question: (just guessing here) By the time the compiler want to know what type will be in the array, it cannot do so. The enum is a generic and thus without full type information (it only has partial type information). Regards, Rien Site: http://balancingrock.nl Blog:

Re: [swift-users] getResourceValue

Hmm, that is interesting to know. I had not realised that URL is in fact NOT a NSURL but a new type that is based on NSURL (and can be toll-free bridged I assume?). I also presume that the same is true for Data/NSData, Date/NSDate etc? (Failure on my part, as I did of course know that the .path

Re: [swift-users] getResourceValue

Thanks Rod, very enlightening! Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Swiftrien Project: http://swiftfire.nl > On 06 Jan 2017, at 15:19, Rod Brown wrote: > > >> On 7 Jan 2017, at 12:50 am, Rien

Re: [swift-users] getResourceValue

What is your real question? Obviously the doc says that this is fine, so what are you asking? what is your problem? Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Swiftrien Project: http://swiftfire.nl > On 05 Jan 2017, at 20:36,

Re: [swift-users] Weird protocol behaviour.

ired. IMO it’s a bug and `:` >> should be fixed to include the root type, whether or not that requires a >> discussion on -evolution. >> >>> On Dec 22, 2016, at 2:17 PM, Howard Lovatt via swift-users >>> <swift-users@swift.org> wrote: >>> >

Re: [swift-users] Improving compilation times?

l ?? "?" str += "No: \(count), HostIp: " + clientIp + " at port: " + service + "\n” Regards, Rien. > > On 23 Mar 2017, at 08:11, Rien via swift-users <swift-users@swift.org> wrote: > >> Thanks for that link, used it to track d

Re: [swift-users] Type inference of array element type

Site: http://balancingrock.nl >> Blog: http://swiftrien.blogspot.com >> Github: http://github.com/Balancingrock >> Project: http://swiftfire.nl >> >> >> >> >> >>> On 24 Mar 2017, at 11:22, Rien via swift-users <swift-users@swift.org>

Re: [swift-users] Importing C system libraries

I feel your pain ;-) Just embrace the dark side, it takes a little time to get used to, but chances are you won’t regret it. Btw: I still do my development in Xcode, its just that using the SPM (Swift Package Manager) and git from the command line gives a whole extra dimension to my

Re: [swift-users] Improving compilation times?

Thanks for that link, used it to track down the worst compile time offender: This piece of code: public func logAddrInfoIPAddresses(_ infoPtr: UnsafeMutablePointer) -> String { let addrInfoNil: UnsafeMutablePointer? = nil var count: Int = 0 var info: UnsafeMutablePointer =

Re: [swift-users] Swift 3.1 String(

> On 05 Apr 2017, at 16:26, Maxim Veksler via swift-users > wrote: > > Hi, > > Swift 3.1 compiler seems to introduces a new complier warning regarding > String(describing: ) > > So this line: > Log.info("Update name for user \(fbUser)”) Log.info(“Update name for user

Re: [swift-users] Alternative to UnicodeScalar

With the Array operations: append or insert var tmp: [CChar] = [0, 0] for i in 1 ... 100 { tmp.insert(0, at: 0) } Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl - A server for websites

[swift-users] Generics with variable argument lists

I am trying to achieve the following: enum FunctionResult { case success(T) case error(String) } func tester(test: (…) -> FunctionResult, onError: (String) -> T) -> T { … } The problem is of course the (…) that simply does not work. I would like to use this generic with a variety of

Re: [swift-users] Generics with variable argument lists

017 11:05, Rien via swift-users wrote: >> I am trying to achieve the following: >> >> enum FunctionResult { >> case success(T) >> case error(String) >> } >> >> func tester(test: (…) -> FunctionResult, onError: (String) -> T) -> T { >&

Re: [swift-users] It seems like we really need an #include preprocessor directive?

> On 11 Mar 2017, at 21:12, Edward Connell via swift-users > wrote: > > Observations about difining an object > • Structs can't inherit and classes shouldn't inherit, final concrete > types should be flat Why? I always default to the position that we should do

Re: [swift-users] How to optionally link swift framework into another framework

You need conditional compilation. Called “Active Compilation Conditions” in the build settings. For example define a ACC of “USE_LOGGING” Then in your code: #if USE_LOGGING import Logging #else struct Logging { func debug(message: string) {} } #endif Regards, Rien Site:

Re: [swift-users] How to optionally link swift framework into another framework

The way I look at it is that Swift wants all symbols resolved when linking. C++ is probably very lenient toward full resolution, and as long as you know that a certain unresolved reference is not used, you can safely ignore the warning. Or maybe the C++ compiler is just very clever and can

Re: [swift-users] How to optionally link swift framework into another framework

Well, that was a bit short… When you want to use logging, define the ACC “USE_LOGGING” in the build settings. When you don’t want to use logging, don’t define the ACC. PS: You can get my logging framework from github: https://github.com/Balancingrock/SwifterLog Regards, Rien Site:

Re: [swift-users] What is the intended response to Array change notification for dependents?

I don’t think there is a single answer to this. It is all highly dependant on what the application does with the info. Sometimes it will indeed be necessary to rebuild the entire gui, other times it is enough to simply insert a new table cell. Regards, Rien Site: http://balancingrock.nl Blog:

Re: [swift-users] edit array

Because you are (trying) to edit a copy. To edit the value in the array itself use: array[index].number += 1 Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl - A server for websites build in

Re: [swift-users] edit array

Agree, though the function should probably be named something like: withEach instead of forEach. Maybe worth a proposal on evolution? Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl - A server

Re: [swift-users] Why does withUnsafePointer(to:) require a var argument?

1) When you obtain a pointer, it can no longer be ensured by the compiler that you won’t write to it. 2) A ‘let’ variable (constant) allows way more optimizations than a ‘var’. I would not be surprised if the majority of ‘let’ constants never see any memory allocation at all. Regards, Rien

Re: [swift-users] Why does withUnsafePointer(to:) require a var argument?

> On 27 Apr 2017, at 09:54, Rick Mann <rm...@latencyzero.com> wrote: > >> >> On Apr 26, 2017, at 23:37 , Rien via swift-users <swift-users@swift.org> >> wrote: >> >> 1) When you obtain a pointer, it can no longer be ensured by the compi

Re: [swift-users] Why does withUnsafePointer(to:) require a var argument?

You will need to take full control over allocation and deallocation. Here is a piece of code from my project SwifterSockets (on github, see the link in my signature) public func tipReceiverLoop( socket: Int32, bufferSize: Int, duration: TimeInterval, receiver: ReceiverProtocol?)

Re: [swift-users] Why does withUnsafePointer(to:) require a var argument?

To address your question: https://developer.apple.com/reference/foundation/data/1779823-withunsafemutablebytes "Warning The byte pointer argument should not be stored and used outside of the lifetime of the call to the closure." Which is exactly what you are doing, hence the code is unsafe (no

Re: [swift-users] Should I be using more catchless do blocks?

Yes. But: Only if it makes the code better. I think that “understandability engineering” is just as important as “software engineering”. Maybe more so. After all, code that we understand has a better chance of working correctly than code that follows all paradigms but once the developer is

Re: [swift-users] JSON keys survey

> On 23 Jun 2017, at 18:42, Tony Parker via swift-users > wrote: > > Hi all, > > This has come up a few times in recent threads, and I wanted to gather some > additional info on your real world use cases. Just reply to me, and any input > is appreciated: > > 1. Does

[swift-users] Very large NSNumber values

I was working with very large NSNumber values and noticed some odd behaviour when converting these values to integers. An NSNumber with the value +1e+40 will when converted to Ints produce integers wit the value zero for Int8, UInt8, Int16, UInt16, Int32 and UInt32. But for Int64 it will

Re: [swift-users] Decode a JSON object of unknown format into a Dictionary with Decodable in Swift 4

Are you looking for a general purpose JSON interpreter / API ? There are many of them around, and in fact I do have my own: https://github.com/Balancingrock/VJson With VJson I would write: let json = VJson.parse(… your json object…) and then access the metadata as: let buyCount = (json |

Re: [swift-users] Decode a JSON object of unknown format into a Dictionary with Decodable in Swift 4

Dang, hit send too soon. Sorry. This does not address your question, so please ignore… (foot in mouth)! Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl - An HTTP(S) web server framework in Swift

Re: [swift-users] Making Error sub-enums Equatable

I’d love to know if there is a better way, but a ‘switch’ or 'if case' is the only way I know. Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl - A server for websites build in Swift > On

Re: [swift-users] weak self

> On 01 May 2017, at 16:59, Dennis Weissmann <den...@dennisweissmann.me> wrote: > >> >> On May 1, 2017, at 4:46 PM, Rien via swift-users <swift-users@swift.org> >> wrote: >> >> In my code I use a lot of queues. And (very often) I will use [w

Re: [swift-users] weak self

e> >>> wrote: >>> >>>> >>>> On May 1, 2017, at 4:46 PM, Rien via swift-users <swift-users@swift.org> >>>> wrote: >>>> >>>> In my code I use a lot of queues. And (very often) I will use [weak self] >>>>

[swift-users] weak self

In my code I use a lot of queues. And (very often) I will use [weak self] to prevent doing things when ‘self’ is no longer available. Now I am wondering: how does the compiler know that [weak self] is referenced? I am assuming it keeps a reverse reference from self to the [weak self] in order

Re: [swift-users] weak self

://swiftfire.nl - A server for websites build in Swift > On 01 May 2017, at 23:26, Guillaume Lessard <gless...@tffenterprises.com> > wrote: > > Hi Rien, > >> On May 1, 2017, at 08:46, Rien via swift-users <swift-users@swift.org> wrote: >> >> In m

[swift-users] Generating html code, best practise?

I want to generate some HTML code with Swift. Of course there are many way to do this, but I am not looking to do an "in-dept all options open” approach. Just some ‘get the html out quickly” type of thing. So I wonder, how do _you_ do this? Simply using Strings is one option, but cumbersome and

Re: [swift-users] CustomStringConvertible?

It cannot be ‘stored’ I would think. I always compute my implementations. Regards, Rien Site: http://balancingrock.nl Blog: http://swiftrien.blogspot.com Github: http://github.com/Balancingrock Project: http://swiftfire.nl - An HTTP(S) web server framework in Swift > On 08 Sep 2017, at

Re: [swift-users] CustomStringConvertible?

Ah, yes. It is possible to ‘store’ it as a fixed string. But I would still expect the compiler to treat it as if it were a computed property. Given that this is a protocol and a protocol cannot define stored properties. (yet anyway) OTOH, what do I know about compilers… lol! Regards, Rien