Declare exercises in toml files instead of d files

[iK4tsu]

No description provided.

[iK4tsu]

Fixes #7

[ljmf00]

Since you are parsing UTF-8 text, you can handle a custom message like you done above for .toml files that are not UTF-8 compliant.

[iK4tsu]

could you further explain?

[ljmf00]

readText throws an exception on bad UTF-8 reading. You can handle it to pretty print an error message rather than the default exception message + stacktrace, like you have done above.

[iK4tsu]

where is that information stated?

[ljmf00]

https://dlang.org/phobos/std_file.html#readText

[iK4tsu]

Does the current change look alright?

[ljmf00]

Wouldn't be interesting to parse TOML and use import() expression, so you can have them accessible at compile-time too, or do you want to make this so you can dynamically add exercises?

[iK4tsu]

Wouldn't be interesting to parse TOML and use import() expression, so you can have them accessible at compile-time too, or do you want to make this so you can dynamically add exercises?

No. That invalidates the whole purpose of this change. What would be the difference between having the exercises defined as they were in info.d and importing the file at compile time? The goal is to not force users to recompile the project each time modifications are done to exercises. Dlings should not have to be recompiled in case of a newly added exercise, a removed exercise, or if any "metadata" is modified (hint, name, path, ...)

[ljmf00]

Wouldn't be interesting to parse TOML and use import() expression, so you can have them accessible at compile-time too, or do you want to make this so you can dynamically add exercises?

No. That invalidates the whole purpose of this change. What would be the difference between having the exercises defined as they were in info.d and importing the file at compile time? The goal is to not force users to recompile the project each time modifications are done to exercises. Dlings should not have to be recompiled in case of a newly added exercise, a removed exercise, or if any "metadata" is modified (hint, name, path, ...)

Not importing the exercises itself, but rather just including the metadata. But it makes total sense nevertheless

[iK4tsu]

update:

• added a simple Result implementation in util.d
• handled exceptions for better error messages, instead of showing an ugly stack trace

[iK4tsu]

update:

• added attributes to Result
• added more Result unit tests

[ljmf00]

CC @WebFreak001 this shouldn't be there. I can make a PR if I have time.

[ljmf00]

Humm, the dub config on toml seems correct 🤔 . Maybe its a behavior of dub, but I suppose this dependency doesn't affect the outer dependency, so no need to be version pinned, because it's only used internally. Perhaps have a dedicated internal-unittest configuration on dub config?

[iK4tsu]

update:

• fixed typo
• added a get Result method