What programming language fits these points:
Programs are as fast as C
Has generic programming
Has metaprogramming
Has object-oriented programming
Is procedural and supports functional programming
Multithreading/concurrency
Good standard library
Is supported by thousands of developers and used by hundreds of companies
>>61661018
java
>>61661018
Common Lisp
if you claim it isn't "as fast as C", C is only fast because of how much people have worked on the compilers for it, and you can run Common Lisp programs on the LLVM
>>61661018
c++
>>61661018
C++, although
>good standard library
It's very hit or miss.
>>61661073
No one uses (((Lisp))) anymore.
>>61661018
Rust