if then statements confusion

[mattwatts15]

var d:String=s.readUTFBytes(s.bytesAvailable.split(".");

does delimiter mean the symbol/letter that is being used to separate each line of code. and do you know how i would put this into the code? earlier u said

var embeddedNums:Array = incomingVar.split("|");

but that will give me a duplicate function error because i already have

var embeddedNums:Array = incomingVar.match(/\d+/g);