Rest args

From JASPA

Introduction

The AS3-style "rest" symbol is a triple dot sequence: ..., but is a single token as far as the syntax is concerned. It is fully supported by JASPA and is inherent in the syntax of the JAS language. At runtime this is handled transparently by the native JavaScript that the JASPA compiler generates.

Example

The symbol may precede the final argument in a function declaration as follows:

function doSomething( required:String, ...more:Array ):void {
     print( more.length );
}
 
doSomething('a','b','c'); // outputs "2"

See Also

• The JAS language
• Similarity of JAS to ActionScript & AS3

External Links

• Example JAS code relating to Function
• Rest parameter documentation on Adobe LiveDocs