StringReduce

Description

Iterates over every element of the string and calls the closure to work on the elements of the string. This function will reduce the string to a single value and will return the value.

Returns

Any

Syntax

StringReduce(String string, UDFMethod callback, Object initialValue)

History

ColdFusion (2021 release): Added in this release.

Parameters

Parameter	Description
string	(Required) The input string
callback	(Required) Closure or a function reference that will be called for each of the iteration.
initialVal	(Optional) Initial value that will be used for the reduce operation. The type is any.

Example

<cfscript> 
    myStr="2021"; 
    closure=function(value1,value2){      
        return (value1 & value2);  
    } 
    writeOutput(StringReduce(myStr,closure,"ColdFusion")) 
    //writeOutput(myStr.reduce(closure,"ColdFusion")) 
</cfscript>

Output

ColdFusion2021

EXAMPLE 2

<cfscript> 
    closure=function(value1,value2){               
        return (value1&value2);  
      } 
      writeOutput(StringReduce(callback=closure,initialValue="Hello",string="World")) 
</cfscript>

Output

HelloWorld

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