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What are the differences between Rust's `String` and `str`?
Why does Rust have String and str ? What are the differences between String and str ? When does one use String instead of str and vice versa? Is one of them getting deprecated?
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What is the purpose of Rank2Types?
I am not really proficient in Haskell, so this might be a very easy question.
6 Answers
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What is the difference between a schema and a table and a database?
This is probably a n00blike (or worse) question. But I've always viewed a schema as a table definition in a database. This is wrong or not entirely correct. I don't remember much from my database courses.
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Why is XOR the default way to combine hashes?
Say you have two hashes H(A) and H(B) and you want to combine them. I've read that a good way to combine two hashes is to XOR them, e.g. XOR( H(A), H(B) ) .
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What is a higher kinded type in Scala?
You can find the following on the web:
5 Answers
5
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What is “lifting” in Haskell?
I don't understand what "lifting" is. Should I first understand monads before understanding what a "lift" is? (I'm completely ignorant about monads, too :) Or can someone explain it to me with simple words?
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How to group dataframe rows into list in pandas groupby?
I have a pandas data frame df like:
12 Answers
12
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How to merge dictionaries of dictionaries?
I need to merge multiple dictionaries, here's what I have for instance:
29 Answers
29
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What is a monad?
Having briefly looked at Haskell recently, what would be a brief, succinct, practical explanation as to what a monad essentially is?
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Delete an element from a dictionary
Is there a way to delete an item from a dictionary in Python?
15 Answers
15
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