zz | πŸΊπŸ™ ZetZ a zymbolic verifier and tranzpiler to bare metal C

Β by Β  zetzit Rust Version: 0.1 License: MIT

kandi X-RAY | zz Summary

kandi X-RAY | zz Summary

zz is a Rust library typically used in Embedded System applications. zz has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

ZetZ is for systems without dynamic memory, where C is and will remain the defacto standard system interface. Target bare metal MCUs, embedded linux, WASM, and embed it in other languages. You can also use it to build cross platform libraries, with a clean portable C-standard api. Zetz plays nice with others and does not require rewriting everything in zetz to be useful in large projects. A major innovative feature is that all code is formally verified by symbolic execution in a virtual machine, at compile time.
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            kandi-support Support

              zz has a medium active ecosystem.
              It has 1612 star(s) with 46 fork(s). There are 40 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 24 open issues and 45 have been closed. On average issues are closed in 38 days. There are 8 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of zz is 0.1

            kandi-Quality Quality

              zz has 0 bugs and 0 code smells.

            kandi-Security Security

              zz has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              zz code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              zz is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              zz releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.
              It has 13 lines of code, 0 functions and 1 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

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            zz Key Features

            No Key Features are available at this moment for zz.

            zz Examples and Code Snippets

            No Code Snippets are available at this moment for zz.

            Community Discussions

            QUESTION

            Excel - Check if Value of Two Columns are new in a List and Assing a new ID to them
            Asked 2022-Mar-29 at 17:25

            Good Morning,

            I'm trying to formulate something in Excel that allow us to check if the value of two columns are new in a list, and if so, assign a new ID for them. If it's not, let it "Blank" or Assign the same ID that have been assigned before(Either way would work for me).

            I'm trying to use something with Count.if, but it doesn't fit. As i'm thinking about this for some time, i decided to look for help.

            What i want to do is a formula that solves the "Formula" Columns below:

            ...

            ANSWER

            Answered 2022-Mar-29 at 16:03

            If you don't mind non-sequential numbering, you can just return the index of the first match found as your identifier:

            Copy into C2, then fill down as necessary. The match row stop may need alteration based on how much data you have

            Source https://stackoverflow.com/questions/71664425

            QUESTION

            How to fill NaN values with 0s and 1s at specified position in pandas dataframe
            Asked 2022-Mar-09 at 11:35

            There are variables V, A, X and O with two values i.e., i and j in the form of 0s and 1s.

            At first, I used the i value for each variable

            ...

            ANSWER

            Answered 2022-Mar-09 at 10:55

            QUESTION

            Modify surface code to solve for 4 dimensions instead of 3 [edited]
            Asked 2022-Feb-22 at 00:46

            I found this great question with some concise code that, with a couple of tweaks, fits a 3D polynomial surface onto a set of points of in space.

            Python 3D polynomial surface fit, order dependent

            My version is below.

            Ultimately, I've realized that I need to fit a surface over time, i.e. I need to solve for a 4 dimensional surface, and I've struggled with it.

            I came up with a very hacky and computationally intensive work-around. I create a surface for each time interval. Then I create a grid of points and find the Z value for each point on each surface. So now I have a bunch of x,y points and each one has a list of z values that need to flow smoothly from one interval to the next. So we do a regression on the z values. Now that the z-flow is smooth, I refit a surface for each time interval based on the x,y points and whatever their smoothed Z value is for the relevant time interval.

            Its what it sounds like. Clunky and suboptimal. The resulting surfaces flow more smoothly and still perform okay but there's gotta be a way to cut out the middle man and solve for that 4th dimension directly in the fitSurface function.

            ...

            ANSWER

            Answered 2022-Feb-22 at 00:46

            Alright so I think I got this dialed in. I wont go over the how, other than to say that once you study the code enough the black magic doesn't go away but patterns do emerge. I just extended those patterns and it looks like it works.

            End result

            Admittedly this is so low res that it look like its not changing from C=1 to C=2 but it is. Load it up and you'll see. The gif should show the flow more cleary now.

            First the methodology behind the proof. I found a funky surface equation and added a third input variable C (in-effect creating a 4D surface), then studied the surface shape with fixed C values using the original 3D fitter/renderer as a point of trusted reference.

            When C is 1, you get a half pipe from hell. A slightly lopsided downsloping halfpipe.

            Whence C is 2, you get much the same but the lopsidedness is even more exaggerated.

            When C is 3, you get a very different shape. Like the exaggerated half pipe from above was cut in half, reversed, and glued back together.

            When you run the below code, you get a 3D render with a slider that allows you to flow through the C values from 1 to 3. The values at 1, 2, and 3 look like solid matches to the references. I also added a randomizer to the data to see how it would perform at approximating a surface from imperfect noisy data and I like what I see there too.

            Props to the below questions for their code and ideas.

            Python 3D polynomial surface fit, order dependent

            python visualize 4d data with surface plot and slider for 4th variable

            Source https://stackoverflow.com/questions/71113010

            QUESTION

            Treat 2nd column with space as one column
            Asked 2022-Feb-14 at 20:32

            I have a command that has an output of the sample below.

            ...

            ANSWER

            Answered 2022-Feb-14 at 15:55

            1st solution: With your shown samples, with any awk, please try following. Simple explanation would be, using match function matching regex "[^"]*" to match from 1st occurrence of " to next occurrence of " and printing matched sub-string and next will skip all further statements. In case this condition is NOT TRUE then anyways usual way of printing 2nd field will work so printing $2 then.

            Source https://stackoverflow.com/questions/71114506

            QUESTION

            How to remove duplicated rows from a dataframe `df` but only when a specific column of the `df` is NA?
            Asked 2022-Jan-18 at 18:41

            I have a data frame df with 5 columns. Region.Label indicates the Region where the study was performed, Sample.Label is a specific area within that Region where I counted for birds, Sp is the bird species I found in that specific area, Distance is the distance between the bird and me, and Effort is the time I was in the area looking for birds. When Distance is NA means that for this area the species was not observed. As an example of the data frame I have:

            ...

            ANSWER

            Answered 2022-Jan-18 at 18:41

            Perhaps, a group by operation would help - grouped by 'Region.Label', 'Sample.Label', 'Effort', filter the non-NA elements of 'Distance' if there are any non-NA elements or else get the first row (row_number() == 1)

            Source https://stackoverflow.com/questions/70760627

            QUESTION

            Introducing non-ground vars into a Prolog query for a custom DSL query language
            Asked 2022-Jan-18 at 15:26

            I have written an external DSL with SWI-Prolog that works by parsing text with a DCG, transforms parsed expressions into facts that get asserted into the Prolog process, then exposes a query language to the user using the same DCG grammar to query against the facts.

            I am stuck trying to figure out how to translate a ground term resulting from a DCG-based parser into a non-ground term with variables that can be passed into a functor like findall/3 to return a list of query results for the user.

            Here is an example of a dataset that could be queried:

            ...

            ANSWER

            Answered 2022-Jan-16 at 23:17

            Singleton variables are one way to go here. Your solution is actually fine and gives no warning if you mark the singleton variable as such with an underscore:

            Source https://stackoverflow.com/questions/70733050

            QUESTION

            How to pass array of commands to a dotnet cli application
            Asked 2022-Jan-08 at 21:32

            A dll can be invoked in Powershell; it takes several parameters, and I must run it several times while most of them stay the same, like this:

            ...

            ANSWER

            Answered 2022-Jan-08 at 11:31

            Too long for a comment, and I have no idea if this would work, but perhaps you can use a small helper function to convert the common arguments from the splatting Hashtable into commandline syntax like

            Source https://stackoverflow.com/questions/70629566

            QUESTION

            spark select column returns reference of old dataframe
            Asked 2021-Nov-25 at 19:41

            I use the following code:

            ...

            ANSWER

            Answered 2021-Nov-24 at 01:29

            This is caused by the DAG generated by Spark. Some operators (or transformers) is are lazy-executed, so they pave the way for Spark to optimize the DAG.

            In this example, there are two major steps: select (or project in SQL's jargonοΌ‰ first, and filter later. But in fact, when executing, filter first, and then select, because it is more efficient.

            You can verify this conclusion by explain() method:

            Source https://stackoverflow.com/questions/70088322

            QUESTION

            Android Studio Arctic Fox (2020.3.1) crashing while loading XML
            Asked 2021-Nov-24 at 18:27

            Today I updated my Android Studio to the newest stable version (Arctic Fox 2020.3.1) and whenever I try to open xml layout, it crashes. I've tried many different things, from rebuilding to invalidating but nothing helped. After upgrade I haven't been able to uninstall Android, because uninstaller was missing (possibly due to crash). I had to restore the system to the point I had an older version. At this point I managed to reinstall Android Studio to the newest version. Even after that the program persisted to crash after trying to open xml (crashes while initializing). At this point I couldn't uninstall again, because the uninstaller is missing (I believe it's due to crash). I had to restore the system again. Any ideas what should I do or did anyone else had the same issue sometimes ago? Thank you in advance. A portion of error is listed below:

            ...

            ANSWER

            Answered 2021-Aug-13 at 15:57

            For Windows

            Replace the existing libandroid_runtime.dll at

            Source https://stackoverflow.com/questions/68577130

            QUESTION

            onclick function not working in javascript
            Asked 2021-Nov-12 at 07:49

            I am working on a project and i added an onlclick function in 3 elements in my code but none of them works because that element is not a button or an anchor tag i guess but i have to do something when that area is clicked here is the image:- This is the image

            I want to either click on the white part of the circle or the the colourfull part of the circle , right now i am trying to click on the colorfull part but i get nothing but when i put an anchor tag in one of the heading and then use onclick on it then it works but in the circle there is no text on which i can add anchor tag i also tried to use change the div to button type of class items and it became clickable but the java script still not works . Here is the code :- 'HTML'

            ...

            ANSWER

            Answered 2021-Nov-12 at 07:02

            When calling a function in onclick, you must specify that it is a function.

            Use () at the end.

            Example:

            Source https://stackoverflow.com/questions/69939043

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install zz

            Install https://github.com/Z3Prover/z3 usually through a distro package
            Get the latest binary from http://bin.zetz.it

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            https://github.com/zetzit/zz.git

          • CLI

            gh repo clone zetzit/zz

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            git@github.com:zetzit/zz.git

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