No null. Mog uses ?T (Optional) for values that might be absent — ?int, ?string (see Chapter 10). The type system distinguishes between “definitely has a value” and “might not have a value.” You cannot accidentally dereference something that does not exist.
This is the foundation of Mog’s security model. If the host doesn’t grant a capability, the script can’t use it. There’s no escape hatch, no FFI backdoor, no unsafe block. A Mog script can only do what the host explicitly allows.
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。关于这个话题，手游提供了深入分析
Click to print (Opens in new window)
println(f"out of stock: {out_of_stock}");，更多细节参见yandex 在线看