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Python 3 was an attempt to do precisely this. 5 years later, they have a 2.5%-3.5% adoption rate. http://blog.startifact.com/pos... You cannot deprecate old language features without risking lock-in on older versions and lack of adoption. The reason C++11 and C++14 has been a successful movement so far is precisely the ability for old code to continue running on new compilers!
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Python 3 was an attempt to do precisely this. 5 years later, they have a 2.5%-3.5% adoption rate.
http://blog.startifact.com/pos...
You cannot deprecate old language features without risking lock-in on older versions and lack of adoption.
The reason C++11 and C++14 has been a successful movement so far is precisely the ability for old code to continue running on new compilers!