[swift-users] NSRange error in docker

Jordan Rose jordan_rose at apple.com
Mon Sep 25 17:28:37 CDT 2017

That's not how extensions in Swift work. All of those functions are definitely available.

Barbara, can you post your source somewhere? And can you check that your Docker image is actually new enough, using `swift --version`? (The Swift project doesn't publish an official Docker image, so unless you made it yourself from a package at swift.org <http://swift.org/> you could easily be using something out-of-date.)


> On Sep 25, 2017, at 15:06, Людвиг Вальда Васкес via swift-users <swift-users at swift.org> wrote:
> Interesting, those extensions aren't public for some reason which prevents their usage from outside of Foundation module. I’m curious if that was intentional due to unfinished work or something or they just forgot to export them.
> Best regards,
> Ludwig
>> 25 сент. 2017 г., в 16:40, Barbara Reichart via swift-users <swift-users at swift.org <mailto:swift-users at swift.org>> написал(а):
>> Hi,
>> I am using swift in a docker container. Now I wanted to use NSRange, which according to the page is already fully implemented for linux.
>> However when I try to use 'lowerBound' or 'upperBound' it gives me the following error:
>> error: value of type 'NSRange' (aka '_NSRange') has no member 'lowerBound'
>> I have looked into the implementation of NSRange in corelibs-foundation <https://github.com/apple/swift-corelibs-foundation/blob/master/Foundation/NSRange.swift>, where I can see that both properties have been defined in an extension.
>> Unfortunately, it seems that I can only use things defined on _NSRange and not on its alias NSRange. Do you guys have any idea, what I am doing wrong?
>> Best regards,
>> Barbara
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