Javafx supports eval function that allows to compile and execute a piece of code on the fly .
javafx支持eval函数，可以在运行过程中编译并执行一小段代码。
But whatever my psych eval says , you promise you 'll tell me the truth ?
但不管我的精神评估是什么样的你保证告诉我真相好吗?
It was a classic " metacircular " interpreter written on top of common lisp , with a definite family resemblance to the eval function defined in mccarthy 's original lisp paper .
