example in README doesn't match currently released version of swift-argument-parser

[heckj]

The example in the README and main branch of the project doesn't match the code that's currently released, resulting in a rather confusing compilation error.

ArgumentParser version: 1.1.4
Swift version::

swift-driver version: 1.62.14 Apple Swift version 5.7.1 (swiftlang-5.7.1.131.4 clang-1400.0.29.51)
Target: arm64-apple-macosx12.0

Checklist

• If possible, I've reproduced the issue using the main branch of this package
• I've searched for existing GitHub issues

The example in the README for Repeat explicitly uses the the new functionality for providing optional values, that was merged with #480. I grabbed the sample directly to stub in code into my repo, and got a sequence of confusing messages from Xcode about it not working, until I finally tracked down the details to the optional being a newer feature than the 1.1.4 release provided.

I wasn't sure how long until this project was thinking about releasing the next update, so I wanted to open this bug.

The error messages when you explicitly set @optional to nil are:

Type '...yourAppName...' does not conform to protocol 'Decodable'
and
Referencing initializer 'init(wrappedValue:name:parsing:help:completion:)' on 'Option' requires that 'Int?' conform to 'ExpressibleByArgument'

This would be pretty quickly resolved by putting out a point release that includes that lovely optional setup that was merged after the last release, which I'd like to suggest. In the meantime, newcomers (and clueless folks like me) might take the README as reflection the currently released code and be very confused.

[natecook1000]

Thanks for the issue, @heckj! I've reverted the README code sample change, so that it builds under what's in the current release. We can add it back when the next release is out, which will be 1.2.0, since it includes new API like the one that enables this improved syntax.

[heckj]

Thank you. I wish it hadn't thrown me for a loop, but I figured that since it did, it might be worth mentioning. Glad it was an easy change up