编译器递归测试
編譯器遞迴測試，是一種由電腦科學家高德納提出，用來評價 ALGOL 60 程式語言實現的手段。該測試的目的是辨識出能夠正確實現「遞迴和非本地參照」的編譯器。 

There are quite a few ALGOL60 translators in existence which have been designed to handle recursion and non-local references properly, and I thought perhaps a little test-program may be of value. Hence I have written the following simple routine, which may separate the "man-compilers" from the "boy-compilers" - 高德納.
（目前只有少數的 ALGOL 60 直譯器能夠正確處理遞迴和非本地參照，所以我認為設計一段小程式去測試編譯器的遞迴功能是有價值的。因此我寫了這段簡單的代碼，以便區分「年幼的」編譯器和「成熟的」編譯器。）