Finally, I& #39;m getting the lecture on hash tables https://abs.twimg.com/emoji/v2/... draggable="false" alt="😩" title="Mattes Gesicht" aria-label="Emoji: Mattes Gesicht">

The teacher: "Hash tables are really and there& #39;s not much to say about them."

Me: https://abs.twimg.com/emoji/v2/... draggable="false" alt="🤨" title="Gesicht mit hochgezogener Augenbraue" aria-label="Emoji: Gesicht mit hochgezogener Augenbraue">

Teacher: "They& #39;re needed when the amount of keys to store are much lower than the possible number of keys"

Me: "HA AH! So THAT& #39;S their purpose!! https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧐" title="Gesicht mit Monokel" aria-label="Emoji: Gesicht mit Monokel">"

This is the kind of thing they don& #39;t tell you on the Wikipedia page https://abs.twimg.com/emoji/v2/... draggable="false" alt="😒" title="Unerfreutes Gesicht" aria-label="Emoji: Unerfreutes Gesicht">

Me: Hey, how come there& #39;s only 1½ minute left and you haven& #39;t spoken about how to find a good hash function? https://abs.twimg.com/emoji/v2/... draggable="false" alt="😟" title="Besorgtes Gesicht" aria-label="Emoji: Besorgtes Gesicht">

Teacher: "The only thing left to say is about finding a good function, but there& #39;s not a lot of materials on this, and you have to search scientific articles for what can be applied in your context https://abs.twimg.com/emoji/v2/... draggable="false" alt="😕" title="Verwirrtes Gesicht" aria-label="Emoji: Verwirrtes Gesicht">"

Me: Ooooh, this is useful information https://abs.twimg.com/emoji/v2/... draggable="false" alt="👀" title="Augen" aria-label="Emoji: Augen">

Some teachers underestimate the value they bring by delimiting what is needed to know, what isn& #39;t, and how much there is to know