My Generic function using LINQ(orderBy thenBy)Not working on IOS

Question

I have written t$$anonymous$$s function

 public static Dictionary<TKey,TValue> MySort<TKey,TValue>(t$$anonymous$$s Dictionary<TKey,TValue> source, Type typeOfObject, bool isAscending = false, params string[] param) 
         {
             if(param.Length == 0)
                 return source;
             
             if (isAscending)
             {
                 var temp = source.OrderBy (a => (typeOfObject.GetProperty (param [0])).GetValue (a.Value, null));
                 
                 for (int i=1; i<param.Length; i++)
                 {
                     var myVar = i;
                     temp = temp.ThenBy((a => (typeOfObject.GetProperty(param[myVar])).GetValue (a.Value, null)));
                 }
                 return temp.ToDictionary(a=>a.Key, a=>a.Value);
             }
             else
             {
                 var temp = source.OrderByDescending (a => (typeOfObject.GetProperty (param [0])).GetValue (a.Value, null));
                 for (int i=1; i<param.Length; i++)
                 {
                     var myVar = i;
                     temp.ThenByDescending((a => (typeOfObject.GetProperty(param[myVar])).GetValue (a.Value, null)));
                 }
                 return temp.ToDictionary(a=>a.Key, a=>a.Value);
             }
         }

I had to use sorting again and again all over my Project so i made t$$anonymous$$s generic function. It works perfectly fine on all platforms except IOS it throws t$$anonymous$$s exception

Attempting to JIT compile method 'System.Linq.Enumerable:OrderBy, object> (System.Collections.Generic.IEnumerable`1>,System.Func`2, object>)' w$$anonymous$$le running with --aot-only.

I did some googling seems there is some solution to it. And an plugin available on asset store but i dont want to use it. (Well is there is no other option i can use it). I can do it without using LINQ but then i dont know how to do t$$anonymous$$s genericly like t$$anonymous$$s. Im using using 4.6. Are linq methods orderby thenby supported on IOS in t$$anonymous$$s verrsion of Unity and MOno if yes then how can i make my function work. If not then what is the best alternative approach.

Answer 1

Answer by hippogames · Nov 01, 2015 at 10:54 PM

ThenBy is not AOT free so try my workaround. I'm sorting my items by [Type] then by [Price]

 Items = Items.OrderBy(i => i.Type).ToList();
 
 for (var j = 0; j < Items.Count - 1; j++) // ordering ThenBy() AOT workaround
 {
     for (var i = 0; i < Items.Count - 1; i++) 
     {
         if (Items[i].Type == Items[i + 1].Type && Items[i].Price > Items[i + 1].Price)
         {
             var temp = Items[i];
 
             Items[i] = Items[i + 1];
             Items[i + 1] = temp;
         }
     }
 }

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My Generic function using LINQ(orderBy thenBy)Not working on IOS

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