Nov 15, 2024
1
1
How do I put a non-copyable, non-movable, non-constructible object into a std::optional?
Taking advantage of the conversion operator.
Showing results for 2024 - The Old New Thing
How do I put a non-copyable, non-movable, non-constructible object into a
Nov 14, 2024
0
1
Solving the puzzle of trying to put an object into a std::optional
How do I set a value? Let me count the ways.
Nov 13, 2024
14
1
The puzzle of trying to put an object into a std::optional
The C++ standard library template type has one of two states. It could be empty (not contain anything), or it could contain a . Suppose you start with an empty . How do you put a into it? One of my colleagues tried to do it in what seemed to be the most natural way: Use the assignment operator. Unfortunately, the assignment failed to compile...
Nov 12, 2024
2
5
Why did Windows 95 setup use three operating systems?
Simplifying the problem to an earlier problem.
Nov 11, 2024
7
5
Debugger breakpoints are usually implemented by patching the in-memory copy of the code
The code in memory may not match what the debugger shows you if the debugger is itself is doing the changing.
Nov 8, 2024
4
11
The case of a program that crashed on its first instruction
Didn't even make it out of the gate.
Nov 7, 2024
6
4
Why do I observe reads from a memory-mapped file when writing large blocks?
The CPU doesn't see the entire write at once.
Nov 6, 2024
1
1
How do I declare an operator overload for my Windows Runtime class?
That's not something expressible in the Windows Runtime.
Nov 5, 2024
6
3
What’s the difference between Display size and Screen size in the Windows 95 display control panel?
No meaningful difference, though others have created a difference.
Nov 4, 2024
4
2
On the limits of time travel in the face of undefined behavior in C
C imposes some constraints, but the principle is mostly still there.