[New Exercise] Add word-search exercise

[Sencudra]

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[github-actions]

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[meatball133]

I would increase the difficulty to at least 5

[Sencudra]

Agreed. Done.

[meatball133]

I get the idea that putting this in the source file would clutter it quite a bit.

I think a better approach would be to put this whole struct as a whole in a separate source file. As you can see being done here: https://github.com/exercism/swift/tree/main/exercises/practice/saddle-points/Sources/SaddlePoints.

[Sencudra]

I get the idea that putting this in the source file would clutter it quite a bit.

The idea here is slightly different. Sometimes, you need a helper function specifically for testing, and you don’t want it to be part of the main codebase. In this case, it’s a fileprivate extension to the WordLocation struct that provides an alternative initializer used only for tests. That’s why it was located in a test file and was marked as fileprivate.

Now, I think it would be a good idea not to pollute the template.swift with this extension. Instead, I moved it to a separate file within the Tests module.

I think a better approach would be to put this whole struct as a whole in a separate source file.

That looks much more natural. Done.