...reply.
I guess it does mean Mutable RAII.

I actually got it to work using...

...would have to go from Immutable RAII to Mutable RAII (see IC++ for refs), which...

...kind of beats the whole point of RAII...

Any suggestions?

Also, on a more general...

...programming
. metaprogramming
. inline assembler
. interface to C
. RAII
. immutability for anything but strings
. vector operations...

...to see the benefits of scope vs RAII vs try-catch-finally with only one...

...D)
or stack-allocated objects in C++ (RAII) is that the former
are "declarative" in...

...also used where you could otherwise use RAII a la C++.

I understand this could...

Ok, good. Now write (using C++ RAII) the following where both transactions must succeed or...

...to use it properly.  In the C++ RAII situation, I would have spotted my mistake...

...just wrote would apply equally to C++ RAII objects. They won't work properly either...