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Cocoa is Apple's native object-oriented application programming interface (API) for its desktop operating system macOS.. Cocoa consists of the Foundation Kit, Application Kit, and Core Data frameworks, as included by the Cocoa.h header file, and the libraries and frameworks included by those, such as the C standard library and the Objective-C runtime.
RubyCocoa will import the Objective-C classes into the Ruby world on demand. For example, when you access OSX::NSTableView for the very first time in your code, RubyCocoa will retrieve all the necessary information regarding this class from the Objective-C runtime and create a Ruby class of the same name that will act as a proxy.
AppKit (formally Application Kit) [1] is a graphical user interface toolkit. It initially served as the UI framework for NeXTSTEP. [2] Along with Foundation and Display PostScript, it became one of the core parts of the OpenStep specification of APIs. Later, AppKit and Foundation became part of Cocoa, the Objective-C API framework of macOS.
The Cocoa text system (formerly known simply by the primary class name NSText) is the linked network of classes, protocols, interfaces and objects that provide typography and text field editing capabilities and to Cocoa applications on Apple's macOS, where it is the primary text-handling system. [1]
Due to Apple macOS’s direct lineage from NeXTSTEP, [4] Objective-C was the standard language used, supported, and promoted by Apple for developing macOS and iOS applications (via their respective application programming interfaces , Cocoa and Cocoa Touch) from 1997, when Apple purchased NeXT until the introduction of the Swift language in ...
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In the Print/export section select Download as PDF. The rendering engine starts and a dialog appears to show the rendering progress. When rendering is complete, the dialog shows "The document file has been generated. Download the file to your computer." Click the download link to open the PDF in your selected PDF viewer.