Maybe something like this: var result= ( from s in db.Stands join cp in db.ContractProducts on s.Id equals cp.StandId join p in db.Products on cp.ProductId equals p.Id where s.EventId == 1 group p by p.Description into g select new { Description=g.Key, TotalArea = g.Sum (x =>x.TotalArea) } ).ToList(); Where db is the linqdatacontext 1 solved … Read more
You are missing quotes around the key names… “name”: “Samsung Tab 3”, The main issue here is the formatting in the description. You will get issues with syntax like: “Samsung Tab 3 is very well ” + “Samsung Tab 3 is very well “, Take a look at JSONLint too, this will help validate your … Read more
This is where methods might come in handy. First an outer loop because you’re counting down (from 4, in this example). static final int NR = 4; //for example static void main(String[] args) { int total = 0; for (int i = NR; i > 0; i–) total += calculateFactorial(i); //i += j; is the … Read more
Put your values in an array or List and randomise the index value…for example public int randomValue(int… values) { int index = (int)Math.round(Math.random() * values.length); return values[index]; } You could also use a List and use Collections.shuffle For example… public class Test { public static void main(String[] args) { int[] values = {4,100,2,20}; System.out.println(randomValue(values)); List<Integer> … Read more
i could see that there is difference between two arrays.. title = new String[] { “My Profile”, “Meet people”,”My Friends”,”Setting” }; // 4 values subtitle = new String[] { “”, “”, “” }; //3 values add one more value to subtitle array.. 7 solved Unfortunately App Has Stopped
Parse can do almost all of the things that you mentioned. For storing data in the database, go through this tutorial. For push notifications, go through this tutorial. For generating a PDF, you’re going to have to do it on the client side. After some quick research I found jsPDF as a viable option. 2 … Read more
I agree with the other commentors- what’s really missing here is an understanding of what the static keyword means and what it means to instantiate objects. The specific issue here is that your Program class’s fields requires an instance before they can be accessed (Program and it’s fields are not static) while your Main method … Read more
If you fix your syntax to select * from table1, table2; you will get a join where every condition is true, which is the same as the Cartesian product of the two tables. table1 table2 —— —— A 1 B 2 C Result: A 1 A 2 B 1 B 2 C 1 C 2 … Read more
You just have to cast to MessageHandler: InstanceType = (MessageHandler)System.Attribute.GetCustomAttribute(Method, typeof(MessageHandler), false); The clue is in this part of the error message: An explicit conversion exists (is a cast missing?) 0 solved Convert VB to C# ‘GetCustomAttribute’
you can try in this way a=input(‘input:’) while a.strip()!=”: b=a.split() ans=”” while len(b) >0 : word=b[0][::-1] ans+=word+” ” b.pop(0) print ans a=input(‘input:’) #output i ma hsejar !aloH 0 solved How can i use a while loop on this program?
After a couple of tryouts I just achieved to solve it: tuple_1 = (‘asdf@’, ‘asdf’) tuple_2 = () for elem in [item for item in tuple_1 if ‘@’ in item]: tuple_2 = tuple_2 + (elem,) print tuple_2 I hope this is what you need! I’m voting you up, since it was a little bit of … Read more
You can use remove all the subviews and attach new subviews if you really don’t want to use UINavigationController, but I advise against it. You can use navigation controller without exposing anything to the user. They don’t have to know you’re using one. If you want to attach actions to an image, it’s better to … Read more
Assuming that you can insert integers of any size, the complexity will be the same as the complexity of division. So it is O(log n) due to log n is the number of digits. Notice 1: If you can only insert 32 or 64 bit integers, the “complexity” will be O(1). Notice 2: Since computers … Read more
Python’s with statement comes handy here. And its good habit to use it when you’re working with files, as it takes care of tearing down the objects, and catching exceptions too. You can read about it in the documentation. And here is how you would use with in your program: from sys import argv from … Read more
The result of Math.Sqrt will never be negative: the result will will be >= 0, NaN, or +Inf. Check the actual value of Disc after the evaluation. solved Using C# language, if(NegativeValue < 0) returns 'false' rather 'true' [closed]