The fibonacci function uses a while loop with mutable variables. The := operator is used inside the loop (i = i + 1) to reassign. Variables declared with an explicit type annotation like a: i64 = 0 can be reassigned with =.
The latter is the more interesting test — it writes a 0xcc byte (the x86-64 software breakpoint instruction) which will cause the kernel to deliver a SIGTRAP to our process if executed. This is literally changing the executable code of libc. So the next time we call getchar, if we get a SIGTRAP, we know that the write has succeeded.
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C105) ast_C39; continue;;
names := ["Alice", "Bob", "Charlie"];
As artificial-intelligence systems take on more of the scientific workflow, the central goal should not be complete automation, but designing platforms that preserve creativity, responsibility and surprise.
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