[swift-corelibs-dev] [swift-evolution] Proposal: Swift Open Source Project and Foundation replacements

[Maxthon Chan]

Let’s take a look at C# which Microsoft designed to replace C++ MFC. The compatibility is never removed although C# itself is pretty complete already. During early days (2002) lots of components in C# are stubs calling back to MFC but nevertheless this presented a more or less complete library set to the user and allowed the language to gain traction - so many traction that now people demand it to be ported to multiple platforms.

Removing Objective-C compatibility in Swift (which does not even have a complete set of libraries yet) in this stage would undermine its usability and the completeness of the libraries, and when the project finally matured a bad reputation of “incomplete support” would already be out there, hampering its use.

> On Dec 4, 2015, at 18:33, Alex Blewitt <alex.blewitt at gmail.com> wrote:
> 
> A more interesting question would be: is Swift designed to ultimately replace Objective-C? If so, baking in compatibility from the outset of the open source version would probably be going in the wrong direction.
> 
> Alex
> 

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