Why is one-armed “if” missing from Racket?
Rationale The one-armed variant of if was removed from Racket to prevent bugs. In functional code one always uses the two-armed variant of if. (if test expr-on-true expr-on-false) Forgetting the second arm expr-on-false would not lead to a syntax-error, but to a runtime error (the expression would return #<void>). To prevent these often occurring bugs … Read more