为什么不关闭这个工作? [英] Why isn't this closure working?
问题描述
我有以下结局:
def deepSave = {
it.attributes.each {it.save (validate:false)}
it.elements.each {deepSave(it)}
it.save(validate:false)
}
其中我称之为:
deepSave(someObject .rootElement)
这个失败了,堆栈跟踪很长,填满了PowerShell的缓冲区,所以我看不到原因是。
我使用下面的方法来做同样的事情,我试图用闭包来处理它,并且工作正常。为什么不能关闭工作?
private def deepSave(def someElement){
for(someElement中的属性。属性){
attribute.save(validate:false)
}
for(元素在someElement.elements中){
deepSave(element)
}
someElement.save(validate:false)
}
我不确定递归方案的有效性,但是当您使用 closure
进行递归时,变量必须在定制之前进行预定义以便它可以在递归过程中了解自己。例如:
def deepSave
pre>
deepSave = {
it.attributes.each {it.save验证:false)}
it.elements.each {deepSave(it)}
it.save(validate:false)
}
我无法从递归中找出退出策略,但是如果您可以详细说明上下文并添加一个中断示例以运行,那么我可以添加更多内容。
I have the following closure:
def deepSave = { it.attributes.each{it.save(validate: false)} it.elements.each{deepSave(it)} it.save(validate: false) }
Which I call like this:
deepSave(someObject.rootElement)
This fails and the stacktrace is so long it fills up PowerShell's buffer so I cannot see what the cause is.
I made the method below to do the same thing I am attempting to do with the closure and it works fine. Why isn't the closure working?
private def deepSave(def someElement) { for(attribute in someElement.attributes) { attribute.save(validate: false) } for(element in someElement.elements) { deepSave(element) } someElement.save(validate: false) }
解决方案I am not sure about the validity of the scenario where you are doing the recursion but when you use
closure
for recursion the variable has to be pre-defined before it is tailored so that it can know about itself during recursion. For example:def deepSave deepSave = { it.attributes.each{it.save(validate: false)} it.elements.each{deepSave(it)} it.save(validate: false) }
I could not figure out an exit strategy from the recursion, but I can add some more to it if you can elaborate on the context and add a breaking sample to run.
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