K. A. Buhr questions

K. A. Buhr answers

• Mimic C usage in preexisting R package
• Overlapping instances when modifying extensible record
• Is there a van Laarhoven optic based on the Monad typeclass?
• When are the results of default methods in instances cached?
• Define variable in list comprehension format function
• How to elegantly create a list of optional values?
• How to reliably determine if a Handle is a terminal in Haskell?
• Is this type-class constraint necessary or redundant?
• Couldn't match type ‘a’ with ‘b’error in Monad instance definition
• git merge with renames in one branch