> On Nov 2, 2016, at 10:17 AM, Jordan Rose <jordan_r...@apple.com> wrote:
>
>>
>> On Nov 2, 2016, at 09:42, Joe Groff via swift-users <swift-users@swift.org
>> <mailto:swift-users@swift.org>> wrote:
>>
>>>
>>> On Nov 1, 2016, at 6:40 PM, Bernardo Breder via swift-users
>>> <swift-users@swift.org <mailto:swift-users@swift.org>> wrote:
>>>
>>> Hello,
>>>
>>> I want to create a mini http server project and execute at Ubuntu 15. The
>>> Xcode compile and access the function "autoreleasepool", but when i compile
>>> the same code at Ubuntu, this function not found
>>>
>>> For example, i can compile the code above at Xcode:
>>>
>>> while true {
>>> autoreleasepool {
>>> var test: Data = "HTTP/1.1 200 OK\r\nContent-Length:
>>> 1\r\n\r\na".data(using: .utf8)!
>>> }
>>> }
>>>
>>> But when i try to compile at Ubuntu:
>>>
>>> git@breder:~$ cat main.swift
>>> import Foundation
>>>
>>> while true {
>>> autoreleasepool {
>>> var test: Data = "HTTP/1.1 200 OK\r\nContent-Length:
>>> 1\r\n\r\na".data(using: .utf8)!
>>> }
>>> }
>>>
>>> git@breder:~$ swiftc main.swift
>>> main.swift:4:5: error: use of unresolved identifier 'autoreleasepool'
>>> autoreleasepool {
>>> ^~~~~~~~~~~~~~~
>>
>> Autoreleasepools are an ObjC compatibility feature. They aren't necessary in
>> standalone Swift.
>
> But they are necessary in Swift programs on Apple platforms (that don’t use
> RunLoop, anyway). Philippe, what do you think? What’s the right way to write
> cross-platform code that doesn’t use RunLoop or dispatch_main for an implicit
> autorelease pool?
>
> (/me remembers +[NSAutoreleasePool drain] from the ObjC-GC days)
If you must, you could conditionally define `autoreleasepool` to just call its
argument as a compatibility shim.
-Joe
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