Ruby:如何迭代一个范围，但以设定的增量? [英] Ruby: How to iterate over a range, but in set increments?

问题描述

所以我正在像这样迭代一个范围:

So I'm iterating over a range like so:

(1..100).each do |n|
    # n = 1
    # n = 2
    # n = 3
    # n = 4
    # n = 5
end

但我想做的是迭代 10 次.

But what I'd like to do is iterate by 10's.

所以不是将 n 增加 1，而是下一个 n 实际上是 10，然后是 20、30 等等.

So in stead of increasing n by 1, the next n would actually be 10, then 20, 30, etc etc.

推荐答案

参见 http://ruby-doc.org/core/classes/Range.html#M000695 获取完整的 API.

See http://ruby-doc.org/core/classes/Range.html#M000695 for the full API.

基本上你使用 step() 方法.例如:

Basically you use the step() method. For example:

(10..100).step(10) do |n|
    # n = 10
    # n = 20
    # n = 30
    # ...
end

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