Do I have to register with your office to be protected?
Previously I talked about booting a PC directly to bare metal D and said that Hello World is never a strong test of a programming environment. To get a better feel for what D is really like on bare metal, I wrote Xanthea simple, classic-style vertical scrolling shooter game with no dependencies on either the D or C runtime.
Some years back I used to write firmware in C for industrial metering systems based on microcontrollers like the MSP The one exception I found was with C preprocessor macros. The Development Environment Xanthe works pretty much like the Hello World example in that previous post.
In particular, it uses linker hacking to remove runtime dependencies. That day has come; Xanthe now works without any linker hacking. Still, porting the D standard libraries to bare metal using a libc like Newlib sounds like an interesting project for another day.
Xanthe actually has three backends. At one time I thought it would be a neat experiment to port Xanthe to more platforms. Xanthe runs on the BIOS bootloader from the previous articleas well as normal desktops using libSDL handy for developing the main code.
With embedded C, the solution is typically to either convert the file to a hexadecimal C array literal and compile it in, or just get the linker to link in the file directly.
I used import to include the game sprites and audio files in the game binary.
Also, I ended up with two copies of each file in my binary, which I suspect is just because of a simplistic internal implementation of import and CTFE type casts. This seems to be fixed in the latest dmd. The classic C approaches still allow more control. This kind of development requires statically allocating a lot of global variables, and pure helped keep that sane.
I like to use a refactor-heavy programming style. Paradoxically, writing code twice is often faster than trying to write it once, and the result is always better quality. For example, when I made the game replayable after a win or loss, there was one bug caused by game state not being properly reset between plays.
Replacing the Preprocessor Embedded C code makes heavy use of the preprocessor. I had some assembly code in the sound driver that I wanted to work on both 64b and 32b. This is trivial to implement cleanly with the C preprocessor. However, trying to use that trick in Xanthe pulled in a lot of Phobos as runtime dependencies, even though the code is only used at compile time.
Attribute Creep I think this is more of a nuisance than a real problem, but it needs mentioning: Some D developers will point out that is possible to put global attributes at the top of modules.
A really common and slightly annoying example in Xanthe is all the inline assembly snippets marked nogc and nothrow.
It would be possible to avoid some nogc and nothrow annotations by grouping functions together and wrapping with annotated braces. Polymorphism D classes depend directly on the D runtime. For Xanthe, though, I decided to make the game entities polymorphic, and I was able to do it using D structs and alias this.
It worked well, especially with a little metaprogramming help. The one thing missing was support for the protected access specifier which is probably just an oversight.
Inline Assembly D supports inline assembly just fine. A plus for D is the naked feature. Summary I could keep writing more, but I think this is enough for now.Could not save [file] because write access was not granted I've checked all the standard reasons why permission to save a file might be denied: The file is not open in any other application.
On the other hand, if the user has read/write access on WESTERN_REGION, then read/write access is also granted on all of the subgroups subordinate to it in the tree.
Write authorization on a group does not give a user write authorization on the parent group. Aug 19, · How to Write a Letter Requesting a Favor.
In this Article: Article Summary Preparing to Write a Request Letter Writing Your Letter Sample Letters Community Q&A There are many instances in your life when you may need to write a formal request alphabetnyc.com: M. for Distributed File Cache Consistency Cary G.
Gray and David R. Cheriton Computer Science Department approval for a write, it invalidates its local copy of the da- to zero if a client is not going to access the file before it is modified by another client.
If you use exclusionary mappings to deny access to an area of the depot to members of group1, but grant access to the same area of the depot to members of group2, a user who is a member of both group1 and group2 is either granted or denied access based on whichever line appears last in the protections table.
Write access to EVERYONE works, IUSR, IIS_IUSRS, DefaultAppPool does not work. why? Ask Question. But If I grant EVERYONE Write access on that dbc folder, then I don't get any error, everything seems perfect.
And for the folder 'dbc' I have already granted Write permissions for IIS AppPool\DefaultAppPool.