- How are positional arguments different from keyword arguments?
- What is the difference between splatting and slurping?
- What is the purpose of using the do-syntax?
- What tool is available for detecting method ambiguities as related to multiple dispatch?
- How do you ensure that the same concrete type is passed to a function in a parametric method?
- How are interfaces implemented without any formal language syntax?
- How do you implement traits, and how are traits useful?
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