What is "Hemingway Code Heroes"?

What is "Hemingway Code Heroes"?
【正确答案】：Hemingway's world is limited. He deals with a limited range of characters in quite similar circumstances and measures them agaist an unvarying code, known as "grace under pressure", which is actually an attitude towards life that Hemingway had been trying to demonstrate is his works.Those who survive in the process of seeking to master the code with the honesty the discipline,and the restraint are Hemingway Code Heroes.