9 ms·

Does this also affect the #_ discard macro? And what about anonymous functions like `#(+ 5 %)`? Since those are reader macros I assume yes?

• michaniskin 12y ago
  The Feature Macros proposal is only adding macros and vars to Clojure---the reader isn't modified at all. Since all of the things you mentioned are reader macros (as you pointed out), Feature Macros never even see them, so they won't be affected in any way. (Reader macros are expanded before regular macros are, so regular macros don't see things like `#(...)`, they see `(fn [] ...)`.)
  • _halgari 12y ago
    The great point made in the README is that we can't generate feature expressions. With feature macros we can have macros that generate cross-platform code. That's big in my mind. That hasn't been a problem with reader macros in the past since you don't need to generate `#(...)` if you have `(fn [] ...)`.
    • brandonbloom 12y ago
      See my comment here: https://news.ycombinator.com/item?id=8924227 https://news.ycombinator.com/item?id=8924227 I don't understand when I would ever want to generate a feature expression. The goal is to generate platform-specialized code. You never have to generate code that generates platform-specialized code!