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![]() In some cases, callbacks are optional. Using "Some(function)" and "None" does not work well, because when someone writes "None" the compiler does not know what to use for "F" in "Option<F>". Therefore, adopt () to mean a "null" callback. It is possible to enforce that a callback is valid by adding a "let _: () = F::ASSERT_IS_SOME" before the invocation of F::call. Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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.. | ||
hw | ||
qemu-api | ||
qemu-api-macros | ||
.gitignore | ||
Cargo.lock | ||
Cargo.toml | ||
clippy.toml | ||
Kconfig | ||
meson.build | ||
rustfmt.toml | ||
wrapper.h |