Agreed that some people can find it easier with explicit names - however some people find it easier with short meaningless names as it makes them focus on the abstraction rather than the naming. There is no right or wrong here. It all depends on the reader.
Should have still used them. It was harder to read this way.
I even thought that this (hardness) was intended to emphasize the way it’s hard to spot problems in real codebase 😅
Agreed that some people can find it easier with explicit names - however some people find it easier with short meaningless names as it makes them focus on the abstraction rather than the naming. There is no right or wrong here. It all depends on the reader.
The blog author is literally using de-facto standard for placeholder names.
The var names used by the author are perfectly fine. They don’t cause any issue, nor do they make things hard to read.