MACROMEDIA COLFUSION MX 7-CFML, Справочник

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870 Chapter 3: ColdFusion Functions
StructKeyArray
Description
Finds the keys in a ColdFusion structure.
Returns
An array of keys; if structure does not exist, ColdFusion throws an exception.
Category
Structure functions
Function syntax
StructKeyArray ( structure )
See also
Structure functions ; “Modifying a ColdFusion XML object” in Chapter 35, “Using XML and
WDDX,” in ColdFusion MX Developer’s Guide
Parameters
Usage
A structure’s keys are unordered.
Example
<!--- Shows StructKeyArray function to copy keys from a structure to an array.
Uses StructNew to create structure and fills its fields with the
information the user enters in the form fields. --->
<h3>StructKeyArray Example</h3>
<h3>Extracting the Keys from the Employee Structure</h3>
<!-- Create structure. Check whether Submit was pressed. If so, define fields
in employee structure with user entries on form. ----->
<cfset employee = StructNew()>
<cfif Isdefined("Form.Submit")>
<cfif Form.Submit is "OK">
<cfset employee.firstname = FORM.firstname>
<cfset employee.lastname = FORM.lastname>
<cfset employee.email = FORM.email>
<cfset employee.phone = FORM.phone>
<cfset employee.company = FORM.company>
<cfelseIf Form.Submit is "Clear">
<cfset rc = StructClear(employee)>
</cfif>
</cfif>
<p> This example uses the StructNew function to create a structure called
"employee" that supplies employee info. Its fields are filled by
the form. After you enter employee information in structure, the
example uses StructKeyArray function to copy all of the keys from
the structure into an array. </p>
Parameter Description
structure Structure from which to extract a list of keys