constraints

In my PostgreSQL 9.4 database, I have a table fields with a column name with unique values. I'm creating a new table fields_new with a similar structure (not important here) and a column name as well. I need a way to constraint name values to be inserted to the fields_new not to be present in fields.name . For example, if fields.name contains the values 'color' and 'length' , I need to prevent fields_new.name from containing 'color' or 'length' values. So, in other words I need to provide that the name columns in both tables do not have any duplicate values between them. And the constraint

For fun, I'm creating a program that generates partners for a Secret Santa gift exchange. However, in this setup, instead of randomly generating pairs, constraints are allowed. Example: Person A and Person B hate each other, so neither A nor B should be assigned to buy a gift for the other. Second Example: Person C bought a gift for Person D last year. Person C should not be assigned to buy a gift for Person D, but person D should still be allowed to buy C a gift. In general, I want to generate a bijective function from a set to itself, but that function needs to be sensitive to constraints.

Is there a possibility to tell MiniZinc to project solutions on a subset of the set of variables? Or is there any other way to enumerate all solutions that are unique wrt to evaluation of some subset of variables? I have tried to use FlatZinc annotations directly in MiniZinc, but it does not work, since the flattening process adds more defines_var annotations and my annotations are ignored. I tried the following model in MiniZinc 2.0 ( https://www.minizinc.org/2.0/index.html ) and this seems to work as you expect, i.e. that just x1 and x2 are projected (printed) in the result. int: n = 3; var

I'm using Gurobi in Python and for a given set S I'm adding the constraint as follows: for i in S: m.addConstr(quicksum(x[i,j] for j in (set(V) - set(S))) >= 2) I want to print these constraints for each value of the sets S and V on the screen. For an example, if S={1,3,4} and V= {1,2,3,4,5,6} , then, my constraint will be x[1,2]+x[1,5]+x[1,6]+x[3,2]+x[3,5]+x[3,6]+x[4,2]+x[4,5]+x[4,6]>=2 I want this constraint to be preinted on the screen. Can someone please help me to do it? There is no built-in function to do this. Your best option is to call Model.write() to export the model as an LP file.

Made a quick video demonstrating the issue here: https://vid.me/9kB5 When I remove the constraints the text does not jump upon loading the view. But then it defeats the purpose. When I setup the constraints I used "Reset to Suggested Constraints" Any ideas? This is not a constraint issue. Your view is going under the navigation bar. You can fix it in storyboard by unchecking "Extend Edges - Under Top Bar" in Page View Controller scene. In code - (void)viewDidLoad { [super viewDidLoad]; self.edgesForExtendedLayout = UIRectEdgeNone; } Hari Kunwar's answer didn't work for me, though. What worked

I just want a simple UITableView with the ability to slide left to delete. Everything works okay except the right constraint on the textview in my prototype cell seems to get shifted after swiping to delete. Here's my code for the table: func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { //Uses prototype cell from Interface Builder called "CommentTableCell" let tableCell = tableView.dequeueReusableCellWithIdentifier("CommentTableCell", forIndexPath: indexPath) as! CommentTableCell tableCell.userInteractionEnabled = true tableCell

I have a prototype tableview cell, with a custom view inside of the tableview cell. The view controller that contains the tableview will only be displayed in landscape mode. The goal is for the UIView that is inside of the tableview cell to resize it's width based on the form factor. So for example there might be a 20pt spacing on the left and right and then the uiview resizes it's width to fill the rest of the space. I'm hoping to do this with storyboard and autolayout. In 3.5 inch form factor it looks like this (this is what it should look like in 4 inch mode as well) In 4 inch form factor