alix | Alix , a browser extension for a11y.css | Browser Plugin library
kandi X-RAY | alix Summary
kandi X-RAY | alix Summary
Alix is a browser extension for a11y.css. It allows you to lint your HTML for Accessibility issues simply by applying a stylesheet that makes use of advanced CSS selectors. Based on a11y.css, created by Gaël Poupard.
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QUESTION
I have a problem where I call a method from a statically linked library and the method returns a pointer to a datastructure. According to the debugger the value that is returned is non-null. But after the method returns and the value is assigned to a local variable, the variable is null.
The screen recording below demonstrates the problem. The recording starts before the method is called, then steps into the method and back out. As you can see, the method returns a pointer to the address 0x6920ae10 but then the value stored in the local pointer variable is 0x0.
I'm at a loss here... I have been using C++ for many years but i never encountered a problem like that before.. Am I missing something stupid here? What could cause this problem?
I compiled the statically linked library (LLRP for Impinj RFID Readers) just before, directly on the machine where the code is executed and i also just recompiled the whole program on the same machine, so I don't think it's a mismatch between the binary code on the remote machine and the code in the IDE.
The same code did work before, but now it's running on a different platform (on a Raspberry Pi instead of an Alix-board and on Raspbian instead of Ubuntu).
Update: I have been investigating this problem further today and i found that the problem occurs here (slightly changed to the code in the animation but the problem is the same):
...ANSWER
Answered 2021-Nov-16 at 19:56What could cause this problem?
The most likely cause is that you've compiled your code with optimization, and are getting confused. Does the program proceed to report invalid response from reader, or does it actually continue to line 181.
If the latter, see this answer.
If the program really does go to execute line 179, then it is likely that your compiler has miscompiled your program (you'll need to disassemble the code to be sure).
In that case, trying different compiler versions, disabling optimizations for a particular function or file, changing optimization levels, etc. etc. may let you work around the compiler bug.
Update:
The program does report the invalid response from reader, so it is actually called. I spent all afternoon investigating this again and at this point i believe it's a compiler error. In the disassembly i can see that it tries to load the value of
m_pReaderEventNotificationDatafrom the object-address+24 (ldr r3, [r3, #24]) but if i view the memory, at this offset is actually 0x000000. The real value that it should return is at offset #28 instead of #24.
This is actually a very common problem, usually stemming from an ODR violation or an incomplete rebuilt.
Suppose you have two object files: foo.o and bar.o, and also define
QUESTION
I am trying to make a webpage using flask and html with
render_template()
but I cant see any text from my html document. I see the </code> appear, but nothing from the paragraphs is showing up.</p>
Here is my code:
...ANSWER
Answered 2021-Jul-01 at 09:10You have not closed the head tag, the second one should be
QUESTION
Here is some mock data corresponding to the real dataset I am using:
mock dataset ...ANSWER
Answered 2021-Jun-04 at 18:47We can create a named list and then stack it to a two column dataset, which we use in a join
QUESTION
Generate a list of all appointments in alphabetical order by patient name and by latest date and time for each patient. The list should also include the doctor scheduled and the receptionist who made the appointment.
This is my query so far:
...ANSWER
Answered 2021-May-05 at 04:52You need to join to the Employee_T table twice, once to fetch the doctor's name, and once to fetch the receptionist's name:
QUESTION
I'm getting the error,
Element 'item': Character content is not allowed, because the content type is empty
when I try to validate my XML file. I searched for this error, but I didn't find anything matching my problem.
When I remove the text between the item elements it works, but I must keep the texts.
Here is my XML :
...ANSWER
Answered 2021-Jan-13 at 16:26To allow item to have text content, change
QUESTION
Goal: I would like to have responsive cards within a container, or grid if it responds better, that flip. When flipped the card will show details about the person on the front of the card.
Tried: I am using W3Schools flip card information but the back does not show up. https://www.w3schools.com/howto/howto_css_flip_card.asp
Code: What I have so far.
...ANSWER
Answered 2020-Sep-21 at 18:58The order of the nested div tags is important with the css rules:
QUESTION
The goal of my code is to simulate a very primitive bank by reading banking actions from a text file. I successfully made the program using lists to store the information, but then figured I could redo it using nested dictionaries to remove the need for iteration through the lists.
...ANSWER
Answered 2020-Jul-24 at 17:02Looks like you're trying to use a global dictionary as your class fields.
Consider using proper class definitions as follows
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