chi questions

chi answers

• Can type families evaluate to qualified types such as `C a => T`?
• How to return a list from a function?
• How to re-order vector values based on the sort-order from another vector in haskell?
• How to modify or read a mutable vector passed as an argument in a function?
• Why are parameter based definitions more efficient than recursion?
• Haskell construct analogous to Rust trait objects
• Can the CPS-styled `call/cc` be written in terms of a hypothetical non-CPS-styled `cc'`?
• Haskell: Couldn't match type `[Char]' with `Char'
• Haskell: How to report validation errors from command line arguments to user with proper exit codes
• Can I verify whether a given function type signature has a potential implementation?