Use of bind keyword

Question

Hi all,
I read that 'bind' keyword would create relationship between two variables. I tried out an example but i could not make out the difference with and without this variable.
//Bind a sequence
var s1 = [1,2,3,4,5];
def s2 = bind for(item in s1){
    item * 2
printSeqs();
function printSeqs(){
    println("First Sequence");
    for(i in s1){
         println(i);
    println("Second Sequence");
    for(i in s2){
          println(i);
}The output is same. i.e the value change in s1 gets reflected in s2 without the bind keyword also. Then what is actual usage and benefit of this keyword. When should i go for this 'bind'?

Answer 1

PhiLho wrote:
Your question, mattmo, is relevant and opportune. Actually, I totally overlooked the 'def'... :-)
I think that it is like 'fixed' in Java: the variable is constant, it is a reference on an object and you can't change this ref. But the content of the referenced object isn't constant...Thanks PhiLho. Do you mean 'final'? If so, that's what I figured, and it's clear to me in that context.
I wonder if there is a better word than "constant" when talking about the "def" keyword in JavaFX. I guess I'll have to get used to it since that seems to be the way it's described in the documentation.
Side note: on some examples on the Net, I saw stuff like
content: bind "Foo"
I thought it was absurd, and it is confirmed by a Sun authority.I agree, binding a "def" to an immutable object would be absurd.