3 ms·

X11: 1987. Still works in 2012.

• msbarnett 14y ago
  X11, not backwards compatible with X10 or X9. OpenGL 4.2, backwards compatible to OpenGL 1.0 (1992) OpenGL ES, not backwards compatible with OpenGL. There's an obvious parallel here of APIs being compatible within themselves but not across boundaries between major architectural revisions intended to throw out cruft and target new environments.
  • cpeterso 14y ago
    > X11, not backwards compatible with X10 or X9. That's why it's called X11 and not X10 ES.
    • msbarnett 14y ago
      This line of reasoning is utterly absurd. They are different APIs with different names. The specifics of the substrings they have in common and the format of the substrings that differ is utterly irrelevant. OpenCL is a different API from OpenAL, Cocos-2d is an API for an entirely different language than Cocos-2d-x, the Cocoa API is wildly incompatible with Cocoa Touch. Horrors! You determine whether or not two APIs are compatible (or even striving to be the same kind of API) by reading the documentation, not by applying stupid heuristics to common substrings in their names.
  • deleted 14y ago
    [deleted]
• fpgeek 14y ago
  X11 wasn't deprecated in 1987, that's when it was released. So far as I know, X11 hasn't been deprecated. Side-note: Win16 (called "the Windows API" back then) actually predates X11 (though not previous versions of X) since Windows 1.0 was released in November 1985.