Question

Weird question but here it is. What are the programming concepts that were “automated” by modern languages? What I mean are the concepts you had to manually do before. Here is an example: I have just read that in C, you manually do garbage collection; with “modern” languages however, the compiler/interpreter/language itself takes care of it. Do you know of any other, or there aren’t any more?

Answer 1

Optimizations.

For the longest time, it was necessary to do this by hand. Now most compilers can do it infinitely better than any human ever could.

Note: This is not to say that hand-optimizations aren’t still done, as pointed out in the comments. I’m merely saying that a number of optimizations that used to be done by hand are automatic now.