Adobe COLDFUSION 9 Manual page 106

Developing applications

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DEVELOPING COLDFUSION 9 APPLICATIONS

The CFML Programming Language

Original structure

Copied structure

Duplicated structure

Structure reference

Clear the original structure

Original structure:

Copied structure

Duplicated structure

Structure reference:

Deleting structure elements and structures

To delete a key and its value from a structure, use the

StructDelete(structure_name, key [, indicateNotExisting ])

The indicateNotExisting argument tells the function what to do if the specified key does not exist. By default, the

function always returns True. However, if you specify True for the indicateNotExisting argument, the function returns

True if the key exists and False if it does not.

You can also use the

StructClear(structure_name)

to delete a structure that you have copied using the

structure is deleted, but the copy is unaffected.

to delete a structure that has multiple references, the function deletes the contents of the

structure and all references point to the empty structure, as the following example shows:

Structure before StructClear

After Clear:

myStruct: <cfdump var="#myStruct#">

myCopy: <cfdump var="#myCopy#">

Looping through structures

You can loop through a structure to output its contents, as the following example shows:

StructDelete

function to delete all the data in a structure but keep the structure instance itself,

Last updated 8/5/2010

function, as follows:

function, the specified