Duplicate |
Description
Returns a clone, also known as a deep copy, of a variable. There is no reference to the original variable.
Returns
A clone of a variable.
Category
Structure functions, System functions
Function syntax

    Duplicate(variable_name)

See also
StructCopy, other Structure functions
History
ColdFusion MX: Changed behavior: this function can be used on XML objects.
Parameters

Parameter | Description
variable_name | Name of a variable to duplicate

Usage

Use this function to duplicate complex structures, such as nested structures and queries.

Note: | With this function, you cannot duplicate a COM, CORBA, or JAVA object returned from the cfobject tag or the CreateObject function. If an array element or structure field is a COM, CORBA, or JAVA object, you cannot duplicate the array or structure.

Example

    <h3>Duplicate Example</h3>
    <cfset s1 = StructNew()>
    <cfset s1.nested = StructNew()>
    <cfset s1.nested.item = "original">
    <cfset copy = StructCopy(s1)>
    <cfset clone = Duplicate(s1)>
    <!--- modify the original --->
    <cfset s1.nested.item = "modified">
    <cfoutput>
    <p>The copy contains the modified value: #copy.nested.item#</p>
    <p>The duplicate contains the original value: #clone.nested.item#</p>
    </cfoutput>

variable_name |
Name of a variable to duplicate