Tiger, Tiger burning bright
Like a geek who works all night
What new-fangled bit or byte
Could ease the hacker´s weary plight?

谁能帮我解释一下

While Iterators have their uses
They sometimes strangle us like nooses
With enhanced-for´s deadly ray
Iterator´s kept at bay

我晕

冰封在吗，帮我看看

你什么意思

谢谢福尔摩斯了