Hey peeps!

I'm sure I'm missing something obvious here but I can't for the life
of me figure out what's going wrong.

I'm trying to use Array.without() to get rid of a number from an array
in the fourth line of my code.
The trouble is, it returns an array with all instances of the index
set to zero.

this.removeTab = function(index){
    history = history.without(index);
    if(selected == index){ this.setSelected(history.last()); }

Any idea what's going on people?

Help much appreciated.
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