ColdFusion中数组的奇怪行为

我正面临着一段代码的问题，稍作修改我得到了不同的结果，应该不是这样。ColdFusion中数组的奇怪行为

版本1给出了正确的结果，我正面临与实际代码版本2的问题。

版本1：

<cfset keywords = listToArray("1,2,3,4,5,6,7,8,9,10")> 

<!--- Common Code Below ---> 
<cfoutput>#getMetadata(keywords).getName()#</cfoutput> 

<cfset toBeAdded = keywords> 
<cfset toBeInactivated = listToArray("1,3,4,6,8")> 
<cfset toBeActivated = toBeInactivated> 

<cfset toBeAdded.removeAll(toBeInactivated)> 
<cfset toBeInactivated.removeAll(keywords)> 
<cfset toBeActivated.retainAll(keywords)>

版本2：

<cfset keywords = []> 
<cfloop from="1" to="10" index="counter"> 
    <cfset arrayAppend(keywords, counter)> 
</cfloop> 

<!--- If I add following line here then it is working as expected and similar to version 1: ---> 
<!--- <cfset keywords = listToArray(arrayToList(keywords))> ---> 

<!--- Common Code Below ---> 
<cfoutput>#getMetadata(keywords).getName()#</cfoutput> 

<cfset toBeAdded = keywords> 
<cfset toBeInactivated = listToArray("1,3,4,6,8")> 
<cfset toBeActivated = toBeInactivated> 

<cfset toBeAdded.removeAll(toBeInactivated)> 
<cfset toBeInactivated.removeAll(keywords)> 
<cfset toBeActivated.retainAll(keywords)>

输出：

这里是要点：Version 1和Version 2。

任何建议，非常感谢！

来源

2017-06-29 Beginner

我没有Java的家伙，但据我可以告诉...

在版本1：keywords包含java.lang.String值，并在第2版：keywords包含java.lang.Double值。

在版本2：toBeInactivated包含要从双打的数组中删除的字符串值。

由于这些Java类型不匹配，它们不会正确从集合中删除。我猜测当CF传递底层对象数据时，它从未正确输出。诚实地说，当所有的东西都没有类型的时候，我会期待CF.

添加从由以下@Twillen的评论，这作品时，你施放counter一种类型的java.lang.String：

<cfset keywords = []> 
<cfloop from="1" to="10" index="counter"> 
    <cfset arrayAppend(keywords, javaCast("string", counter))> 
</cfloop> 


<!--- Common Code Below ---> 
<cfoutput>#getMetadata(keywords).getName()#</cfoutput> 

<cfset toBeAdded = keywords> 
<cfset toBeInactivated = listToArray("1,3,4,6,8")> 
<cfset toBeActivated = toBeInactivated> 

<cfset toBeAdded.removeAll(toBeInactivated)> 
<cfset toBeInactivated.removeAll(keywords)> 
<cfset toBeActivated.retainAll(keywords)> 

<cfdump var="#toBeAdded#" label="To Be Added"> 
<cfdump var="#toBeInactivated#" label="To Be Inactivated"> 
<cfdump var="#toBeActivated#" label="To Be Activated">

来源

2017-06-29 12:59:11

在完成我的工作之前，您已经完成了答案。我想补充的唯一的事情是，你可以得到正矢量二经用'arrayAppend（关键字铸造值的字符串匹配一个版本，JavaCast（“字符串”，计数器）'。 – Twillen

好一点@Twillen。感谢您的。 –

啊，这并没有打动我，谢谢:) – Beginner

一个ColdFusion阵列是不是Java Collection对象。所以我质疑removeAll（）和retainAll（）与这样的数组的使用。考虑到这一点，我的答案是：

<cfset keywords = createobject("java","java.util.Vector").init()> 
<cfset toBeAdded = createobject("java","java.util.Vector").init()> 
<cfloop from="1" to="10" index="counter"> 
    <cfset keywords.add(javaCast("int", counter))> 
    <cfset toBeAdded.add(javaCast("int", counter))> 
</cfloop> 

<!--- Common Code Below ---> 
<cfoutput>#getMetadata(keywords).getName()#</cfoutput> 

<cfset listToBeInactivated = "1,3,4,6,8"> 
<cfset toBeInactivated = createobject("java","java.util.Vector").init()> 
<cfset toBeActivated = createobject("java","java.util.Vector").init()> 
<cfloop list="#listToBeInactivated#" index="index"> 
    <cfset toBeInactivated.add(javaCast("int", index))> 
    <cfset toBeActivated.add(javaCast("int", index))> 
</cfloop> 

<cfset toBeAdded.removeAll(toBeInactivated)> 
<cfset toBeInactivated.removeAll(keywords)> 
<cfset toBeActivated.retainAll(keywords)> 

<cfdump var="#toBeAdded#" label="toBeAdded"> 
<cfdump var="#toBeInactivated#" label="toBeInactivated"> 
<cfdump var="#toBeActivated#" label="toBeActivated">

来源

2017-07-06 14:46:18 BKBK

ColdFusion中数组的奇怪行为

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