Has the approach to verbs in v2 changed?

Issue by ravensorb Thursday Nov 02, 2017 at 18:53 GMT _Originally opened as https://github.com/gsscoder/commandline/issues/500_

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I was reviewing the code and the following wiki for vers https://github.com/gsscoder/commandline/wiki/Latest-Version and I cannot see how they line up.

Ex - the following will not compile

var result = CommandLine.Parser.Default.ParseArguments<AddOptions, UpdateOptions, DeleteOptions(args).MapResult(
    (AddOptions aopts) => {},
    (UpdateOptions upopts) => {},
    (DeleteOptions dopts) => {});

It complains that there is no support for more than one Generic and from looking at the code, I didn’t see any overrides or extensions to ParseArguments that supports multiple generics. So I was curious if the approach had changed.

[ericnewton76]

Comment by ravensorb Thursday Nov 02, 2017 at 20:10 GMT

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That helped – I found the issue 😃 It appears you must add the using statement

using CommnadLine;

Without that it doesn’t find the extension methods or the Error option.

[mhmd-azeez]

@ericnewton76 Wouldn’t it be better to mention the need to add using CommnadLine; in the README.md example as well? Or at least write Parser.Default.ParseArguments instead of CommandLine.Parser.Default.ParseArguments to force the programmer to add a using statement.

Because it’s not obvious from the example that these are extension methods and can produce frustrating compilation errors.