Rares Dima questions

• Kotlin generic number Union?
• How to read an Int in one line of code?
• Is there a way for Rust macros to act as text substitutions like in C?
• How to read a haskell string
• C++ lambdas as class methods
• Haskell performance: Composition vs Application?
• Why is there no realloc equivalent to the new/delete family?
• Java streams vs Iterators

Rares Dima answers