Last updated on
Apr 27, 2021 06:02:36 AM GMT
|
Also Applies to ColdFusion
Description
Iterates over every entry of the struct and calls the closure to work on the key value pair of the struct.
Returns
Any
Syntax
StructReduce(struct, function(result, key, value [,struct]), initialVal)
History
ColdFusion 11: Added this function.
Parameters
Parameter |
Req/Opt |
Default |
Description |
|---|---|---|---|
| struct | Required | The input struct. | |
| function | Required | Closure or a function reference that will be called for each of the iteration. The arguments passed to the callback are
|
|
| initialVal | Optional | Initial value that will be used for the reduce operation. The type is any. |
Example
<cfscript>
person=StructNew();
person = {fname="John", lname="Doe"};
ucaseStruct = structMap(person, function(key, value)
{
return ucase(value);
});
writeDump(ucaseStruct);
concatValues = structReduce(person, function(result, key, value)
{
result = result?:"";
result&= value & " ";
return result;
});
writeDump(concatValues);
</cfscript>
Output
Using member function
<cfscript>
myStruct=StructNew();
myStruct={a=1,b=2,c=3,d=4,e=5};
myReduce=myStruct.reduce(function(result,key,value){
return result+value;
},10);
WriteDump(myReduce); // Returns 25
</cfscript>
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