static void checkCircles(string[] circles, string[] colors) { Hashtable hashtable = new Hashtable(); foreach(var mag in circles){ if(hashtable[mag]==null){ hashtable[mag]=1; } else{ hashtable[mag]=(int)hashtable[mag]+1; } } var variables = colors.GroupBy(p=>p).Select(p=>new{Key = p.Key, Count = p.Count()}); int count =0; foreach(var v in variables){ if(hashtable[not.Key]==null)break; if((int)hashtable[not.Key]>=not.Count)count++; } }

can someone please explain to me what the following line of code is doing in the code above? var variables = colors.GroupBy(p=>p).Select(p=>new{Key = p.Key, Count = p.Count()});