Define "successful language". Popularity of a programming language doesn't mean success. COBOL, Fortran and Pascal used to be hugely popular, now with every passing year, it is costing more and more money to support systems that once considered as "successfully built".
Sadly, it seems in a few decades, pretty much that would be the fate of every single PL in TIOBE's Top. All popular PLs of today are morally outdated. Programming languages of future would be striving for:
a) Developer's productivity
b) Execution performance
c) Correctness of the program
And none of the popular languages today are making good progress in any of those directions.
Sadly, it seems in a few decades, pretty much that would be the fate of every single PL in TIOBE's Top. All popular PLs of today are morally outdated. Programming languages of future would be striving for:
a) Developer's productivity
b) Execution performance
c) Correctness of the program
And none of the popular languages today are making good progress in any of those directions.