IsClosure

Determine whether a given object is a closure

Method Signature

IsClosure(object=[any])

Arguments

Argument	Type	Required	Description	Default
object	any	true	The value to test for closure-ness.

Examples

Returns true if the object is a closure

Run Example

square = ( Any x ) => {
	return x * x;
};
writeDump( isClosure( square ) );

Result: TRUE

Returns false if the object is not a closure

Run Example

square = ( Any x ) => {
	return x * x;
};
squared = square( 5 );
writeDump( isClosure( squared ) );

Result: FALSE

Additional Examples

Run Example

// closure
c = () => {
	return true;
};

// user defined function (UDF)
function u() {
	return true;
}
dump( var=isClosure( c ), label="closure" );
dump( var=isClosure( u ), label="user defined function" );

Related

• ArrayIsEmpty

• arrayIsEmpty

• Attempt

• IsArray

• IsBinary

• IsBoolean

• IsCustomFunction

• 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