Written form to keep for later: blog.rockthejv...
This video is for the Scala programmer who's only been using generics in their basic form: either with collections, or simply attaching a type argument to a class/trait and minding their own business.
I will introduce the concepts of co- and contravariance and why they are useful, with a few examples and some rules of thumb to follow, without getting into the academic weeds that otherwise make these concepts seem so obscure and confusing to most programmers.
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22 авг 2024
