If that's the worst issue, I'm not seeing much of a problem. I guess I'm not particularly hyped about intro of "let" (block scope) into Javascript, vs "var" (f

If that's the worst issue, I'm not seeing much of a problem. I guess I'm not particularly hyped about intro of "let" (block scope) into Javascript, vs "var" (function scope), either, but it bothered somebody enough to need "let". Does R have an "IIFE" type construct, similar to JS or Golang?