Everything is written in something else

Well, C is written in C. And I think Perl6 is written in Perl6.

This is done through a process called "bootstrapping". Basically, once one's compiler is sufficiently implemented in some language, one can port the compiler to the language it compiles. At that point, the original source is no longer needed; the previous version of the compiler can be used to build the next.

In reply to Re^5: Writing a Programming Language in Perl by ikegami
in thread Writing a Programming Language in Perl by programmer99

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