IsCustomFunction

Determine whether a given object is a custom function.

Method Signature

IsCustomFunction(object=[any], type=[string])

Arguments

Argument	Type	Required	Description	Default
object	any	true	The value to test for closure-ness.
type	string	false	Check for a specific type of custom function - UDF, Lambda, or Closure.

Examples

isCustomFunction Example

Here we've example to check the given variable is user defined function or not.

Run Example

function myfunc() {
	return 1;
}
writeDump( isCustomFunction( myfunc ) );

Result: YES

isCustomFunction Example

Here we've example to check the given variable is user defined function or not.

Run Example

myfunc = "2";
writeDump( isCustomFunction( myfunc ) );

Result: NO

Additional Examples

Run Example

writeDump( isCustomFunction( realUDF ) );
writeDump( isCustomFunction( xxx ) );
testFun = realUDF;
X = 1;
writeDump( isCustomFunction( testFun ) );
writeDump( isCustomFunction( X ) );

function realUDF() {
	return 1;
}

function xxx( Any void ) {
}

Related

• ArrayIsEmpty

• arrayIsEmpty

• Attempt

• IsArray

• IsBinary

• IsBoolean

• IsClosure

• IsDate

• IsDateObject

• IsDebugMode

• IsDefined

• IsEmpty

• IsFileObject

• IsIPv6

• IsJSON

• IsLeapYear

• IsLocalHost

• IsNull

• IsNumeric

• IsNumericDate

• IsObject

• IsQuery

• IsSimpleValue

• IsStruct

• IsValid

• IsXML

• IsXmlAttribute

• IsXMLDoc

• IsXMLElem

• IsXMLNode

• IsXMLRoot

• LSIsNumeric

• structIsEmpty