csa-c | 2D cubic spline approximation | Animation library
kandi X-RAY | csa-c Summary
kandi X-RAY | csa-c Summary
2D cubic spline approximation
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QUESTION
I am running a scraper using Selenium and BeautifulSoup and I want to check whether a certain word is in .
A snippet of the HTML code is as follows:
...ANSWER
Answered 2021-Apr-29 at 10:34To search
data-asin="..."
, you can use this example:
QUESTION
I have seen the good answer to my quesntion from Debugging CodeStubAssembler (CSA) code in V8. howerver,i really cannot understand the point "You can then step through the CSA code as it emits a Turbofan IR graph which the Turbofan backend will then translate to machine code" in upshot one.Can I debug CSA line by line according to the source code in that way? In order to express my needs more clearly,I use some code examples:
...ANSWER
Answered 2021-Mar-22 at 15:51Yes, you can do that, just like for any other C++ code.
Of course, this code runs as part of mksnapshot
, and what it does is it creates (part of) a "builtin" code object that can handle appending elements to JavaScript arrays. Line 2869 will put a comment into the code object's comment section (if you are running with the --code-comments
flag), line 2870 will define a label that will be used for conditional jumps later.
So just to be clear, this code does not run when you actually append elements to arrays. At that time, the builtin generated by this code will run, and debugging that requires different techniques (see the other answer).
EDIT to address questions in comments:
If i enter
p kind
in line 2870,can i get the value ofkind
? if i enterp ElementsKindToString
in this function,can i get the address of functionElementsKindToString
?
Yes, of course, this is plain C++. (Also, why do you ask? Just try it!)
how could i break in gdb before the Turbofan backend translate this function to machine code and get the debugging format i posted above.
Run mksnapshot
in GDB and set a breakpoint on the line you want, then switch the view mode as desired. (Again, this is regular GDB usage; if you need a GDB tutorial then please search for one, there are plenty on the 'net.)
While you haven't directly asked for it, I have a suspicion that what you really want to do is step through the generated builtins instruction-by-instruction and see the CSA source that was responsible for generating them. That, unfortunately, is not possible, because the builtins and their generators run at different times (and even in different binaries!).
QUESTION
First of all I am sorry if I ask the wrong questions.
I am currently using vlc (libdvbcsa) to encrypt and decrypt live streams and save it to a ts file just by giving
csa-ck= {key}
on server side and
:ts-csa-ck= {key}
on client side. It works as expected.
But I want to use ffmpeg to decrypt ts file and show(I can show normal ts files but not the ones with csa encryption). I tried many input options for ffmpeg with no success and then I realized that ffmpeg has nothing to do with csa and most of them are for aes.
Am I wrong? Can you lead me to a direction?
...ANSWER
Answered 2020-May-11 at 17:55Is it possible to use CSA decryption with FFMPEG?
No. I see no mention of CSA encryption/decryption in the source code.
QUESTION
I am requesting Gmail API for full message and it is responding with some sort of data but I am unable to parse it because the data that the API is returning is not in JSON format I need help. I got stuck and it's my final degree project.
...ANSWER
Answered 2018-Dec-22 at 20:23The problem is you are decoding this as if it's regular base64. The body is actually encoded in base64url
which is a url safe version. So you just have to do an extra step to convert from one to the other.
Decode base64URL to base64 -- Swift
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