在Ruby早期逃避.each {}迭代 [英] escaping the .each { } iteration early in Ruby

问题描述

代码：

 c = 0  
 items.each { |i|  
   puts i.to_s    
   # if c > 9 escape the each iteration early - and do not repeat  
   c++  
 }  

我想抓住前10个项目然后离开每个循环。

I want to grab the first 10 items then leave the "each" loop.

我该用什么替换注释行？有更好的方法吗？ Ruby idiomatic更多的东西？

What do I replace the commented line with? is there a better approach? something more Ruby idiomatic?

推荐答案

虽然中断解决方案有效，但我认为更实用的方法真的适合这个问题。你想要取前10个元素并打印出来，试试

While the break solution works, I think a more functional approach really suits this problem. You want to take the first 10 elements and print them so try

items.take(10).each { |i| puts i.to_s }

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