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36 Cards in this Set
- Front
- Back
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resize handles |
Small white squares that appear on a UI element’s borders when it’s selected so you can change its size on the canvas. |
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root view controller |
The first item added to a navigation controller’s navigation stack, which is never popped off (removed from) the stack. |
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run loop |
An event processing loop that you use to schedule work and coordinate the receipt of incoming events in your app. |
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runtime |
The period during which a program is executing. |
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scene |
A storyboard representation of a screen of content in your app. |
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scene dock |
A bar that contains information related to a scene in a storyboard. |
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segue |
A transition between two view controllers in a storyboard. |
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show segue |
A segue that pushes new content on top of the current view controller stack. |
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Simulator |
An app in Xcode that simulates the behavior and appearance of running an app on a device. |
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Size inspector |
An inspector that you use to edit the size and position of a UI element in a storyboard. |
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source view controller |
The view controller whose contents are displayed at the beginning of a segue. |
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storyboard |
A file that contains a visual representation of the app’s UI (user interface), showing screens of content and the transitions between them, that you work on in Interface Builder. |
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storyboard entry point |
The first scene that’s shown from a storyboard when an app starts. |
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string interpolation |
The process of inserting string representations of constants, variables, literals, and expressions into longer strings. |
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structure |
A data type that’s similar to a class, but doesn’t support inheritance and is passed by value instead of by reference. |
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subclass |
A class that’s a child of another class (known as its superclass). |
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subview |
A view that is enclosed by another view (known as its superview). |
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superclass |
A class that’s a parent of another class (known as its subclass) |
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superview |
A view that encloses another view (known as its subview). |
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Swift standard library |
A set of data types and capabilities designed for Swift and baked into the language. |
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A set of data types and capabilities designed for Swift and baked into the language. |
The object that receives the action message in the target-action pattern. |
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target-action |
A design pattern in which one object sends a message to another object when a specific event occurs. |
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tuple |
A grouping of values. |
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Type Casting |
A way to check the type of an object, and to treat that object as if it’s a different superclass or subclass from somewhere else in its own class hierarchy. |
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Type Inference |
The ability of the Swift compiler to determine the type of a value from context, without an explicit type declaration. |
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UIKit |
A Cocoa Touch framework for working with the UI layer of an iOS app. |
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Underscore |
A representation of a wildcard in Swift (_). |
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unit test |
A piece of code written specifically to test a small, self-contained piece of behavior in your app to make sure it behaves correctly. |
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unwrap |
To extract an underlying value from an optional. |
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user interface |
The layer of visual elements that lets a user interact with a piece of software. |
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utility area |
An area in Xcode that displays the inspector pane and library pane. |
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unwind segue |
A type of segue used to implement backward navigation. |
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variable |
A value that can change after it’s been initialized, indicated in Swift by the var keyword. |
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view |
An object that’s used to construct your UI and display content to the user. |
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View controler |
An object that manages a set of views and coordinates the flow of information between the app’s data model and the views that display that data. |
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View Hierarchy |
A hierarchical representation of views relative to other views. |
