It's no secret that Apple is in the convergence of their platforms iOS and OS X. First, OS X Lion, then OS X Mountain Lion and OS X Mavericks got many interface elements and technologies borrowed from iOS. The new OS X Yosemite company continued this trend by integrating in predictive typing.
We are talking about the keyboard technology QuickType, which appeared in the iOS 8. When typing keyboard offers options for continuing the phrases on the basis of previous conversations and writing style. Moreover, the system considers that the user message is likely to use conversational style and in letters Mail - a more formal. The best option for the next word, you can select "one-touch".
In iOS 8 QuickType function is implemented as a special panel, located above the keyboard unit. In OS X Yosemite it works by pressing Escape.
In OS X Mavericks and earlier versions, there is a function hints, which also works by pressing ESC. But now it is used only to supplement the words, that is as a set text. For example, if you write "pref" and then press ESC, the system will offer a list of relevant words: "give," "given," "ghosts", etc.
In OS X Yosemite key works on an empty field. New a desktop OSes, like mobile, understands what is at stake in the text messages and allows you to choose to go about it. According to the idea Apple, the system should offer about it, taking into account the written text and the most typical for writing man. Eventually she learns communication style, remembers the words and phrases that the user uses most often. In other words, it QuickType for OS X.
Unfortunately, the technology does not yet work with the Russian language. Among the supported - English, French, German, Portuguese, Spanish and Thai. Predictive also supports Simplified and Traditional Chinese, as well as Japanese Kanji.