Comment by whimsicalism
3 years ago
To me, "what a hashmap is" is just an extremely basic engineering concept. Your reference to "memorizing" (to refer to the topic you don't like) vs. "understanding" (to refer to the topic you do like) is value-laden and also suggests to me that you think a hashmap is more complicated than it actually is - it is truly just one step from understanding what a hash is.
well I mean there is quite a lot of differences between what the answer to 'what is a hashmap?' can be - is it acceptable to say a hashmap is a bunch of key value pairs where the key is an identifier by which you can look up the value you want - or should it be more in depth - akin to the wikipedia article https://en.wikipedia.org/wiki/Hash_table describing not just what it is but also its place in CS and how it is implemented? If the second it's probable the memorized description would be accurate.
I would expect the basic notion of hashing to decide where to place an element as well as a strategy for dealing with collisions (the basic approach being hashing to a linked list). This didn't require any "memorization" on my part.
Ok fine, so not an in-depth definition, but someone might think you mean an in-depth definition if you don't specify the level you expect is being used (perhaps because they have encountered that situation). I mean if you ask me define a hashmap and how it works for example I might think: "aw damn, this guy wants the low level details, I bet this place sucks to work at!"
Although I would probably ask them to specify the level of detail they want before trying to comply, and then not get the job because I ask a lot of unnecessary questions or something.
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