有更好的方法来处理这个问题吗？

发布于 2024-11-19 14:48:39 字数 309 浏览 1 评论 0原文

我已经多次遇到过这种特殊的模式，为了使其正常工作而必须声明标志变量有点烦人。有没有一种更简单的方法来安排我没有看到的代码？

flag = true
if x.is_okay?
  some_stuff_that_needs_x_to_be_okay
  if some_condition_that_depended_on_x
    actually_important_stuff
    flag = false
  end
end

if flag
  do_something_when_important_stuff_did_not
end

原文

I've come across this particular pattern a few times now and it's somewhat annoying to have to declare the flag variable in order for this to work correctly. Is there a simpler way to arrange this code that I'm just not seeing?

flag = true
if x.is_okay?
  some_stuff_that_needs_x_to_be_okay
  if some_condition_that_depended_on_x
    actually_important_stuff
    flag = false
  end
end

if flag
  do_something_when_important_stuff_did_not
end

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清引 2024-11-26 14:48:39

这是一种没有标志变量的方法。如果 do_something_when_important_stuff_did_not 是一个简单的语句（例如方法调用），那么这是合理的。

if x.is_okay?
  some_stuff_that_needs_x_to_be_okay
  if some_condition_that_depended_on_x
    actually_important_stuff
  else
    do_something_when_important_stuff_did_not()
  end
else
  do_something_when_important_stuff_did_not()
end

Here's one way without the flag variable. It's reasonable if do_something_when_important_stuff_did_not is a single, simple statement, such as a method call.

if x.is_okay?
  some_stuff_that_needs_x_to_be_okay
  if some_condition_that_depended_on_x
    actually_important_stuff
  else
    do_something_when_important_stuff_did_not()
  end
else
  do_something_when_important_stuff_did_not()
end

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