# let

- `(`let` ((NAME EXPRESSION) ...) EXPRESSION)`
  The `let` expression is similar to the `letrec` expression, except that the scope of the bindings is different. Like `letrec`, the body expression may refer to the bindings created by the `let`. However, the binding expressions (those on the right-hand sides) may not refer to these bindings. To illustrate this, consider the following expressions and its result:

      (define a 3)
      (let ((a 16)
            (b a))
        (+ b a))
      19

  In other words, `b`'s reference to `a` is bound to the top-level `a`, rather than the inner one.
- `(`let` NAME ((NAME EXPRESSION) ...) EXPRESSION)`
  This is the same as the `recur` expression.

Advanced Student Language