[swift-corelibs-dev] NSDate, NSDateFormatter

[Tony Parker]

Thanks Joe.

- Tony

> On Dec 12, 2015, at 1:51 PM, Joseph Bell <joe at iachieved.it> wrote:
> 
> Tony, all:
> 
> I've opened https://bugs.swift.org/browse/SR-208 <https://bugs.swift.org/browse/SR-208> against the .dateFormat property of NSDateFormatter.  It appears that it is not functioning as expected.  This was against the latest main branch of the repositories and compiled on my Ubuntu14.04 system.
> 
> swift version 2.2-dev (LLVM 46be9ff861, Clang 4deb154edc, Swift 778f82939c)
> Target: x86_64-unknown-linux-gnu
> 
> Joe
> 
> 
> 
> On Fri, Dec 11, 2015 at 12:56 PM, Tony Parker <anthony.parker at apple.com <mailto:anthony.parker at apple.com>> wrote:
> Hi Joe,
> 
> Sure, bug reports are appreciated.
> 
> If you have the ability to check out the whole stack and try ToT, that would be great too. We are moving extremely rapidly right now on implementing missing pieces of Foundation.
> 
> - Tony
> 
>> On Dec 11, 2015, at 10:53 AM, Joseph Bell <joe at iachieved.it <mailto:joe at iachieved.it>> wrote:
>> 
>> Thanks Tony, with LD_LIBRARY_PATH set to include usr/lib/swift/linux I can get the REPL to reproduce what I see with the compiler, and that's a blank line printed out:
>> 
>> ➜  dates  LD_LIBRARY_PATH=/opt/apple/swift-2.2-SNAPSHOT-2015-12-01-b-ubuntu14.04/usr/lib/swift/linux:$LD_LIBRARY_PATH swift printdate.swift 
>> 
>> ➜  dates  
>> 
>> Which leads me to the obvious question, either I've forgotten how to use NSDateFormatter, or the implementation in the December 1 drop is silently not supporting setting the dateFormat property, which appears to be the case, as setting dateStyle and timeStyle do appear to work.
>> 
>> import Foundation
>> 
>> let dateFormatter = NSDateFormatter()
>> dateFormatter.dateFormat = "dd-MM-yyyy"
>> var dateStr = dateFormatter.stringFromDate(NSDate())
>> 
>> print(dateStr)
>> 
>> dateFormatter.dateStyle = .MediumStyle
>> dateFormatter.timeStyle = .MediumStyle
>> dateStr = dateFormatter.stringFromDate(NSDate())
>> print(dateStr)
>> 
>> results in:
>> 
>> ➜  dates  LD_LIBRARY_PATH=/opt/apple/swift-2.2-SNAPSHOT-2015-12-01-b-ubuntu14.04/usr/lib/swift/linux:$LD_LIBRARY_PATH swift printdate.swift
>> <-- this is a blank line emitted by the first print(), which it should not be -->
>> Dec 11, 2015, 6:52:33 PM
>> 
>> Thanks for any insight and if I need to file a bug report I am happy to help,
>> Joe
>> 
>> 
>> 
>> 
>> On Fri, Dec 11, 2015 at 10:59 AM, Tony Parker <anthony.parker at apple.com <mailto:anthony.parker at apple.com>> wrote:
>> Hi Joe,
>> 
>> Try this as a workaround: Set the LD_LIBRARY_PATH environment variable to $INSTALLED_LOCATION_OF_SWIFT/usr/lib/swift/linux
>> 
>> This should only affect the REPL and not compiled code.
>> 
>> I think this is supposed to be fixed in the top of tree Swift but not in the Dec 1 binary drop.
>> 
>> - Tony
>> 
>>> On Dec 11, 2015, at 5:54 AM, Joseph Bell via swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>> wrote:
>>> 
>>> All,
>>> 
>>> Howdy.  I am using swift-2.2-SNAPSHOT-2015-12-01-b-ubuntu14.04 that was released on December 1.  The following code:
>>> 
>>> import Foundation
>>> 
>>> let dateFormatter = NSDateFormatter()
>>> dateFormatter.dateFormat = "dd-MM-yyyy"
>>> let dateStr = dateFormatter.stringFromDate(NSDate())
>>> 
>>> print(dateStr)
>>> 
>>> results in 
>>> 
>>> LLVM ERROR: Program used external function '_TFC10Foundation6NSDateCfT_S0_' which could not be resolved!
>>> 
>>> when executed with the swift driver, and then when compiled with swiftc the print statement just gives a blank newline.
>>> 
>>> I don't know if this is a known issue (I haven't found any reference on the status page or elsewhere indicating this was unimplemented), or I have an environmental problem.
>>> 
>>> Thoughts?
>>> 
>>> Joe
>>> 
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>> 
>> 
> 
> 

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