> They can 'compile' in an 'optimized manner' using something else ...
Thats actually the issue Julia attempts to solve as highlighted in the article. There are many languages that you can use to express ideas, but when you need the idea to run as fast as possible, you have to rewrite in C/Fortran/etc and then add bindings to to the language.
Julia lets you write inline C, which I believe means that you can still express algorithms simply, but with some parts (trivially) optimized. (Not a huge julia user, but thats my take on it)
Thats actually the issue Julia attempts to solve as highlighted in the article. There are many languages that you can use to express ideas, but when you need the idea to run as fast as possible, you have to rewrite in C/Fortran/etc and then add bindings to to the language.
Julia lets you write inline C, which I believe means that you can still express algorithms simply, but with some parts (trivially) optimized. (Not a huge julia user, but thats my take on it)