Example

Copied from https://www.emacswiki.org/emacs/DynamicBindingVsLexicalBinding

    (let ((a 1))                            ; binding (1)
      (let ((f (lambda () (print a))))
        (let ((a 2))                        ; binding (2)
          (funcall f))))

A name that is lexically bound is looked up only in bindings in…

Evalulation Argunment first

Call-By-Value

最common 的做法，先計算parameter 的value，然後把value copy 進function…