constraints

I have used auto layout for my view controllers. I have set the V and H positions in constraints, but I want to know how can I increase my button size when it changes to 5s, 6 and 6 Plus. This is the way I added constraints for the login button: NSArray *btncon_V=[NSLayoutConstraint constraintsWithVisualFormat:@"V:[btnLogin(40)]" options:0 metrics:nil views:viewsDictionary]; [btnLogin addConstraints:btncon_V]; NSArray *btncon_POS_H=[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-100-[btnLogin]-100-|" options:0 metrics:nil views:viewsDictionary]; [self.view addConstraints:btncon_POS_H];

I have a table, students , with 3 columns: id , name , and age . I have a UNIQUE index Index_2 on columns name and age . CREATE TABLE `bedrock`.`students` ( `id` INTEGER UNSIGNED NOT NULL AUTO_INCREMENT, `name` VARCHAR(45) NOT NULL, `age` INTEGER UNSIGNED NOT NULL, PRIMARY KEY (`id`), UNIQUE INDEX `Index_2` USING BTREE(`name`, `age`) ) ENGINE = InnoDB; I tried this insert option: insert into students (id, name, age) values (1, 'Ane', 23); which works ok. Than I've tried this one (see Ané - e acute ): insert into students (id, name, age) values (2, 'Ané', 23); and I receive this error message:

Howdy, I have a problem where i need a cascade on multiple foreign keys pointing to the same table.. [Insights] | ID | Title | | 1 | Monty Python | | 2 | Spamalot | [BroaderInsights_Insights] | broaderinsight_id | insight_id | | 1 | 2 | Basically when either record one or two in the insights table is deleted i need the relationship to also be deleted.. I've tried this: CREATE TABLE broader_insights_insights(id INT NOT NULL IDENTITY(1,1), broader_insight_id INT NOT NULL REFERENCES insights(id) ON DELETE CASCADE, insight_id INT NOT NULL REFERENCES insights(id) ON DELETE CASCADE, PRIMARY KEY(id))

I'm trying to define a function, factorize, which uses structural type constraints (requires static members Zero, One, +, and /) similar to Seq.sum so that it can be used with int, long, bigint, etc. I can't seem to get the syntax right, and can't find a lot of resources on the subject. This is what I have, please help. let inline factorize (n:^NUM) = ^NUM : (static member get_Zero: unit->(^NUM)) ^NUM : (static member get_One: unit->(^NUM)) let rec factorize (n:^NUM) (j:^NUM) (flist: ^NUM list) = if n = ^NUM.One then flist elif n % j = ^NUM.Zero then factorize (n/j) (^NUM.One + ^NUM.One) (j:

I want to setup table constraints for the following scenario and I’m not sure how to do it or if it’s even possible in SQL Server 2005. I have three tables A,B,C. C is a child of B. B will have a optional foreign key(may be null) referencing A. For performance reasons I also want table C to have the same foreign key reference to table A. The constraint on table C should be that C must reference its parent (B) and also have the same foreign key reference to A as its parent. Anyone have any thoughts on how to do this? In general I do not see a specific reason to do this -- however, you did ask.