ColdFusion:在 CFC 中省略 variables 关键字是否安全? [英] ColdFusion: Is it safe to leave out the variables keyword in a CFC?

问题描述

在 ColdFusion 组件 (CFC) 中，是否必须为变量范围的变量使用完全限定名称?

In a ColdFusion Component (CFC), is it necessary to use fully qualified names for variables-scoped variables?

如果我改变这个，我会不会惹上麻烦:

Am I going to get myself into trouble if I change this:

<cfcomponent>
    <cfset variables.foo = "a private instance variable">

    <cffunction name = "doSomething">
        <cfset var bar = "a function local variable">
        <cfreturn "I have #variables.foo# and #bar#.">
    </cffunction>
</cfcomponent>

这个?

<cfcomponent>
    <cfset foo = "a private instance variable">

    <cffunction name = "doSomething">
        <cfset var bar = "a function local variable">
        <cfreturn "I have #foo# and #bar#.">
    </cffunction>
</cfcomponent>

推荐答案

创建变量时指定变量"没有关系，因为foo默认会放在变量范围内；但访问变量时会很重要.

It won't matter to specify "variables" when you create the variable, because foo will be placed in the variables scope by default; but it will matter when you access the variable.

<cfcomponent>
    <cfset foo = "a private instance variable">

    <cffunction name="doSomething">
        <cfargument name="foo" required="yes"/>
        <cfset var bar = "a function local variable">
        <cfreturn "I have #foo# and #bar#.">
    </cffunction>

    <cffunction name="doAnotherThing">
        <cfargument name="foo" required="yes"/>
        <cfset var bar = "a function local variable">
        <cfreturn "I have #variables.foo# and #bar#.">
    </cffunction>

</cfcomponent>

doSomething("args") 返回我有 args 和一个 函数局部变量"

doSomething("args") returns "I have args and a function local variable"

doAnotherThing("args") 返回我有一个变量的私有实例和一个函数局部变量."

doAnotherThing("args") returns "I have a private instance of a variable and a function local variable."

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