How to skip $index in ng-repeat - angularjs

Question

Consider the following:
<div ng-repeat='quest in quests'>
<div ng-switch on="quest.ui.type">
<div ng-switch-when="ms-select-single" >
<div ms-select-single quest='quest'
quest-num='{{(true)?numInc():return}}'></div>
</div>
<div ng-switch-when="ms-select-multy">
<div ms-select-multy quest='quest'
quest-num='{{(true)?numInc():return}}'></div>
</div>
<div ng-switch-when="ms-date">
<div ms-date quest='quest'
quest-num='{{(true)?numInc():return}}'>{{questNo}}</div>
</div>
<div ng-switch-when="ms-text">
<div ms-text quest='quest'
quest-num='{{(true)?numInc():return}}'>{{questNo}}</div>
</div>
<div ng-switch-when="ms-textarea">
<div ms-textarea quest='quest'
quest-num='{{(true)?numInc():return}}'>{{questNo}}</div>
</div>
<div ng-switch-when="ms-number">
<div ms-number quest='quest'
quest-num='{{(true)?numInc():return}}'>{{questNo}}</div>
</div>
<div ng-switch-when="ms-html">
<div ms-html quest='quest'></div>
</div>
</div>
</div>
What should be my true statement in the quest-num='{{(true)?numInc():return}}'>?
What i want to achieve is an increment a model value conditionaly when the statement is true, if it's true all the time the program breaks, what should be my true statement here?
numInc returns a ++ of a num value in the model, initialized first at 0, and when it hits the function it increments, but because i have ng-switch it increments too many times, that's why i need the true/false statement, i think...

Answer 1

I'm not sure I understood your question but if you wanted something like this
Label Actual $index value
Question 1 0
1
Question 2 2
Question 3 3
etc...
Then we can use a directive. Here's a quick sketch
var app = angular.module('app', []);
app.controller('MainController', function($scope){
$scope.arr = [{name:'John', phone:'555-1276'},
{name:'Mary', phone:'800-BIG-MARY'},
{name:'Mike', phone:'555-4321', countMe:false},
{name:'Adam', phone:'555-5678'},
{name:'Julie', phone:'555-8765'},
{name:'Juliette', phone:'555-5678', countMe:false}]
});
app.directive('conditionalNumberDirective', function(){
var counter = 0;
return {
restrict: 'A',
link: function(scope, el, attr) {
// config what is item and what is coutMe via attrs here
if(scope.$index === 0) {
counter = 1;
}
scope.counter = counter;
if(angular.isDefined(scope.item) && angular.isDefined(scope.item.countMe) && !scope.item.countMe) {
scope.counter = null;
}else {
counter++
}
}
}
});
Html would look something like
<div ng-controller="MainController">
<input type="text" ng-model="search"/>
<div ng-repeat="item in arr | filter:search" conditional-number-directive>
Index:{{$index}} {{item}} - Label:{{counter}}
</div>
</div>

Answer 2

Instead of $index use a ng-model variable. You could try something like this also(ternary):
{{ true ? true : false }}
while assigning the value.