StructDelete

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ColdFusion CFML Reference User Guide
Applies to: ColdFusion

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Description

Removes an element from a structure.

Returns

Returns true, if an element is deleted successfully. False, otherwise.

Category

Structure functions

Syntax 

StructDelete(structure, key [, indicatenotexisting ])

See also

Structure functions; Modifying a ColdFusion XML object in the Developing ColdFusion Applications

History

ColdFusion MX: Changed behavior: this function can be used on XML objects.

Parameters

Parameter

Description

structure

Structure or a variable that contains one. Contains element to remove.

key

Element to remove.

indicatenotexisting
  • True: returns Yes if key exists; No if it does not.
  • False: returns Yes regardless of whether key exists. Default.

Example 

<cfscript>
       myStruct={a:1,b:2,c:3,d:4,e:5};
       WriteOutput("The input struct is:");
       WriteDump(myStruct);
       xFalse=StructDelete(myStruct,"f",false);// Returns Yes regardless of whether key exists
       WriteOutput(xFalse & " | "); //Display Yes
       xTrue=StructDelete(myStruct,"f","true");// Returns No since the key "f" does not exist in the input struct
       WriteOutput(xTrue & " | "); //Display No
       // Delete an element that actually exists in the input structure
       StructDelete(myStruct,"e",true); // Deletes element "e" from the struct and returns Yes
       WriteOutput("The updated struct is:");
       WriteDump(myStruct);
</cfscript>

Output

structdelete output
structdelete output

Using member function 

<cfscript>
       myStruct={a:1,b:2,c:3,d:4,e:5};
       WriteOutput(myStruct.delete("c",true));
</cfscript>