Working with Auto Layout Visual Format Language and Programmatically Creating Constraints

As an iOS developer you already know that one of the tasks in the to-do list of any project is to set and configure constraints for any views and subviews added to it. It’s been proved that constraints can become tricky and end up to a real pain in the… app quite often, but everything is just a matter of understanding and a bit of experience. In truth, constraints are just rules you want to apply over the layout of any graphic elements you have on-screen; those rules regard the position, the size and the visual relationship of the views and subviews, and define a default behaviour of the UI even when the orientation of the devices gets changed.

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