Explorer Qualifier
Rita Seliba
How can I apply GCC's/Clang's __restrict__ qualifier to the this pointer of a class?
This question was inspired by Richard Powell's CppCon 2018 talk, "How to Argue(ment)." I saw a similar question "restrict qualifier on member functions (restrict this pointer)." (All code can be found on Compiler Explorer)
The above code generates the following assembly. In it, we can see that value has to be loaded twice, via the this pointer. This makes sense, it is a consequence that C++ inherited from C and the restrict qualifier allows the programmer to turn off the behavior. I can find no way to enable the restrict functionality for the this pointer.
On the Compiler Explorer page, I show examples of method arguments using __restrict__ to elide the second load. There is also an example of passing a struct reference to a function and using __restrict__ to elide the second load.
I can imagine a world where the compiler would allow the programmer to mention the implicit this pointer in the arguments of a method. The compiler could then allow application of qualifiers to the this pointer. See code below for an example.
Within the body of T::fn, this has the effective definition T *__restrict__ const this. Notice that the interpretation of a __restrict__ member function qualifier is different to that of const or volatile qualifier, in that it is applied to the pointer rather than the object. This is consistent with other compilers that implement restricted pointers.
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Pour les qualifier: le format changera tous les mois et sera sur des formats Arena pour cette premire saison, alternant construit et limit.Ca permettra ceux qui veulent tester pour les compt' et ceux qui veulent juste jouer Magic pour kiffer de se retrouver. Mais a permettra aussi de pouvoir slectionner vos formats de prdilection.
Pour le tournoi Final:Il se droulera dans 4 mois environ la boutique Majestik et sera en format mix construit+draft avec un top8 en construit, sur une journe, pour donner une bribe d'exprience de pro tour.Je casterai l'event et la dotation sera en produit MTG
Thanks for the info about making it a script instead of a class. The new code editor in Berlin defaults to using a class template so I just assumed that was correct for this circumstance - I guess not.
Unfortunately, I'm still not getting the desired results out of my reference qualifier. Now that I have "Client Callable" marked as true, is this being run as a client script and not a business rule (i.e. do I need to start using g_form instead of current to fetch items from the form)?
I still feel like I'm flailing around a bit with this script because I have no means of echoing variables out or seeing what it's doing. Any tips for how I can troubleshoot a script of this type?
This topic explains the general concept of resource qualifiers, how to use them, and the purpose of each of the qualifier names. See ResourceContext.QualifierValues for a reference table of all the possible qualifier values.
So, for high contrast, the set of qualifiers is contrast-standard, contrast-high, contrast-black, and contrast-white. Qualifier names and qualifier values are not case sensitive. For example, contrast-standard and Contrast-Standard are the same qualifier.
Here is an example of using qualifiers to name folders that contain asset files. Use qualifiers in folder names if you have several asset files per qualifier. That way, you set the qualifier once at the folder level, and the qualifier applies to everything inside the folder.
If you name your folders as in the example above, then your app uses the high contrast setting to load resource files from the folder named for the appropriate qualifier. So, if the setting is High Contrast Black, then the resource files in the \Assets\Images\contrast-black folder are loaded. If the setting is None (that is, the computer is not in high contrast mode), then the resource files in the \Assets\Images\contrast-standard folder are loaded.
The file named logo.png has no contrast qualifier on it at all. The absence of a qualifier is a neutral value. If no preferred match can be found, then the neutral value serves as a fallback match. In this example, if high contrast is off, then there is no actual match. The neutral match is the best match that can be found, and so the asset logo.png is loaded.
If you only need one set of assets for high contrast and one set for standard contrast, then you can use folder names instead of file names. In this case, omitting the folder name entirely gives you the neutral match.
You can combine qualifiers in folder and file names. For example, you may want your app to load image assets when high contrast mode is on and the display scale factor is 400. One way to do this is with nested folders.
Depending on the tools and workflow you use for asset-creation, or on what you find easiest to read and/or manage, you can either choose a single naming strategy for all qualifiers, or you can combine them for different qualifiers.
The configuration qualifier is used to load a resource that best matches the value of the MS_CONFIGURATION_ATTRIBUTE_VALUE environment variable. So, you can set the variable to the string value that has been assigned to the relevant resources, for example designer, or test.
You can also use a devicefamily qualifier to name a Resources File (.resw), or folder. For example, when your app is running on the mobile device family, the UI element will use the text and foreground resources defined in your Resources.devicefamily-mobile.resw file if it contains
If you want your app to support different display languages, and you have string literals in your code or in your XAML markup, then move those strings out of the code/markup and into a Resources File (.resw). You can then make a translated copy of that Resources File for each language that your app supports.
A layoutdirection qualifier corresponds to the layout direction of the display language setting. For example, an image may need to be mirrored for a right-to-left language such as Arabic or Hebrew. Layout panels and images in your UI will respond to layout direction appropriately if you set their FlowDirection property (see Adjust layout and fonts, and support RTL). However, the layoutdirection qualifier is for cases where simple flipping isn't adequate, and it allows you to respond to the directionality of specific reading order and text alignment in more general ways.
Windows automatically selects a scale factor for each display based on its DPI (dots-per-inch) and the viewing distance of the device. See Effective pixels and scale factor. You should create your images at several recommended sizes (at least 100, 200, and 400) so that Windows can either choose the perfect size or can use the nearest size and scale it. So that Windows can identify which physical file contains the correct size of image for the display scale factor, you use a scale qualifier. The scale of a resource matches the value of DisplayInformation.ResolutionScale, or the next-largest-scaled resource.
The targetsize qualifier is primarily used to specify file type association icons or protocol icons to be shown in File Explorer. The qualifier value represents the side length of a square image in raw (physical) pixels. The resource whose value matches the View setting in File Explorer is loaded; or the resource with the next-largest value in the absence of an exact match.
The Windows 10 May 2019 Update introduced a new "light" theme for the Windows Shell. As a result, some application assets that were previously shown on a dark background will now be shown on a light background. For apps that apps that provided altform-unplated assets for the taskbar and window switchers (Alt+Tab, Task View, etc), you should verify that they have acceptable contrast on a light background.
Apps that want to provide a tailored resource for shell light theme can use a new alternate form resource qualifier: altform-lightunplated. This qualifier mirrors the existing altform-unplated qualifier.
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