Document how to use CLI for configuration

[liamdawson]

I can't seem to find how to use the CLI for configuration, despite the fact the README says it's an available source.

[npryce]

Will do.

For now, you'll have to refer to the tests. https://github.com/npryce/konfig/blob/master/src/test/kotlin/com/natpryce/konfig/cli_tests.kt

[StefanLiebig]

I played with it a little bit and it seems that it is not possible to mark a CommandLineOption as optional.
This is unfortunate especially with the possibility of using the overriding function so that proper default values can be provided through another Configuration.

Did I miss something?

[npryce]

Use the getOrElse or getOrNull methods to get optional properties

…

On Wed, 30 Aug 2017 at 12:12, Stefan Liebig ***@***.***> wrote: I played with it a little bit and it seems that it is not possible to mark a CommandLineOption as optional. This is unfortunate especially with the possibility of using the overriding function so that proper default values can be provided through another Configuration. Did I miss something? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#9 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AADbm9Y6AoI58SSVbz2XRw-CV8vvwBltks5sdUObgaJpZM4KX5mO> .

[StefanLiebig]

Sorry, my mistake.
I did not recognize that the exception I got had been caused by the property access. I thought that parsing would generate the exception.

[npryce]

No problem. The library does need better documentation!

…

--Nat

On Wed, 30 Aug 2017 at 13:53, Stefan Liebig ***@***.***> wrote: Sorry, my mistake. I did not recognize that the exception I got had been caused by the property access. I thought that parsing would generate the exception. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#9 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AADbm9BRyyJTKMMBZq7PjxOtqw_sQ--Tks5sdVsxgaJpZM4KX5mO> .

[bpappin]

This was in 2017 and the documentation is still not updated, of this ticket closed.