如何在 Ruby 中以毫秒为单位计时操作? [英] How to time an operation in milliseconds in Ruby?

问题描述

我想弄清楚特定函数使用了多少毫秒.所以我四处张望，但找不到在 Ruby 中以毫秒精度获取时间的方法.

I'm wishing to figure out how many milliseconds a particular function uses. So I looked high and low, but could not find a way to get the time in Ruby with millisecond precision.

你是怎么做到的?在大多数编程语言中，它就像

How do you do this? In most programming languages its just something like

start = now.milliseconds
myfunction()
end = now.milliseconds
time = end - start

推荐答案

您可以使用 ruby​​ 的 Time 类.例如:

You can use ruby's Time class. For example:

t1 = Time.now
# processing...
t2 = Time.now
delta = t2 - t1 # in seconds

现在，delta 是一个 float 对象，您可以获得该类将提供的最细粒度的结果.

Now, delta is a float object and you can get as fine grain a result as the class will provide.

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