MAJOR | Meta-Analysis for JAMOVI | Data Visualization library

 by   kylehamilton C++ Version: Current License: GPL-3.0

kandi X-RAY | MAJOR Summary

kandi X-RAY | MAJOR Summary

MAJOR is a C++ library typically used in Analytics, Data Visualization applications. MAJOR has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

Meta-Analysis Module for JAMOVI. If there’s something missing please open an issue and I’ll be sure to give it a look. You will first need to download Jamovi. To install this module download the file MAJOR.jmo and select it using the sideload feature in Jamovi.
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            kandi-support Support

              MAJOR has a low active ecosystem.
              It has 10 star(s) with 6 fork(s). There are 3 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 9 open issues and 7 have been closed. On average issues are closed in 143 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of MAJOR is current.

            kandi-Quality Quality

              MAJOR has no bugs reported.

            kandi-Security Security

              MAJOR has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              MAJOR is licensed under the GPL-3.0 License. This license is Strong Copyleft.
              Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

            kandi-Reuse Reuse

              MAJOR releases are not available. You will need to build from source code and install.

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            MAJOR Key Features

            No Key Features are available at this moment for MAJOR.

            MAJOR Examples and Code Snippets

            No Code Snippets are available at this moment for MAJOR.

            Community Discussions

            QUESTION

            Why does the implementation of std::any use a function pointer + function op codes, instead of a pointer to a virtual table + virtual calls?
            Asked 2022-Apr-08 at 15:31

            Both the GCC and LLVM implementations of std::any store a function pointer in the any object and call that function with an Op/Action argument to perform different operations. Here is an example of that function from LLVM:

            ...

            ANSWER

            Answered 2022-Apr-08 at 15:31

            Consider a typical use case of a std::any: You pass it around in your code, move it dozens of times, store it in a data structure and fetch it again later. In particular, you'll likely return it from functions a lot.

            As it is now, the pointer to the single "do everything" function is stored right next to the data in the any. Given that it's a fairly small type (16 bytes on GCC x86-64), any fits into a pair of registers. Now, if you return an any from a function, the pointer to the "do everything" function of the any is already in a register or on the stack! You can just jump directly to it without having to fetch anything from memory. Most likely, you didn't even have to touch memory at all: You know what type is in the any at the point you construct it, so the function pointer value is just a constant that's loaded into the appropriate register. Later, you use the value of that register as your jump target. This means there's no chance for misprediction of the jump because there is nothing to predict, the value is right there for the CPU to consume.

            In other words: The reason that you get the jump target for free with this implementation is that the CPU must have already touched the any in some way to obtain it in the first place, meaning that it already knows the jump target and can jump to it with no additional delay.

            That means there really is no indirection to speak of with the current implementation if the any is already "hot", which it will be most of the time, especially if it's used as a return value.

            On the other hand, if you use a table of function pointers somewhere in a read-only section (and let the any instance point to that instead), you'll have to go to memory (or cache) every single time you want to move or access it. The size of an any is still 16 bytes in this case but fetching values from memory is much, much slower than accessing a value in a register, especially if it's not in a cache. In a lot of cases, moving an any is as simple as copying its 16 bytes from one location to another, followed by zeroing out the original instance. This is pretty much free on any modern CPU. However, if you go the pointer table route, you'll have to fetch from memory every time, wait for the reads to complete, and then do the indirect call. Now consider that you'll often have to do a sequence of calls on the any (i.e. move, then destruct) and this will quickly add up. The problem is that you don't just get the address of the function you want to jump to for free every time you touch the any, the CPU has to fetch it explicitly. Indirect jumps to a value read from memory are quite expensive since the CPU can only retire the jump operation once the entire memory operation has finished. That doesn't just include fetching a value (which is potentially quite fast because of caches) but also address generation, store forwarding buffer lookup, TLB lookup, access validation, and potentially even page table walks. So even if the jump address is computed quickly, the jump won't retire for quite a long while. In general, "indirect-jump-to-address-from-memory" operations are among the worst things that can happen to a CPU's pipeline.

            TL;DR: As it is now, returning an any doesn't stall the CPU's pipeline (the jump target is already available in a register so the jump can retire pretty much immediately). With a table-based solution, returning an any will stall the pipeline twice: Once to fetch the address of the move function, then another time to fetch the destructor. This delays retirement of the jump quite a bit since it'll have to wait not only for the memory value but also for the TLB and access permission checks.

            Code memory accesses, on the other hand, aren't affected by this since the code is kept in microcode form anyway (in the µOp cache). Fetching and executing a few conditional branches in that switch statement is therefore quite fast (and even more so when the branch predictor gets things right, which it almost always does).

            Source https://stackoverflow.com/questions/71797625

            QUESTION

            ReferenceError: TextEncoder is not defined Node.js with mongoose
            Asked 2022-Mar-31 at 04:57

            the problem seems to be with mongoose & mongodb packages as it works fine when

            ...

            ANSWER

            Answered 2021-Sep-03 at 04:51

            Check your node version, if it's lower than 12 it won't work, if that's the case updating node should do do the job. You could downgrade your mongoose version too.

            There's an issue closed on Mongoose github page. https://github.com/Automattic/mongoose/issues/10638

            Source https://stackoverflow.com/questions/69015811

            QUESTION

            kubectl versions Error: exec plugin is configured to use API version client.authentication.k8s.io/v1alpha1
            Asked 2022-Mar-28 at 09:41

            I was setting up my new Mac for my eks environment. After the installation of kubectl, aws-iam-authenticator and the kubeconfig file placement in default location. I ran the command kubectl command and got this error mentioned below in command block.

            My cluster uses v1alpha1 client auth api version so basically i wanted to use the same one in my Mac as well.

            I tried with latest version (1.23.0) of kubectl as well, still the same error. Whereas When i tried to do with aws-iam-authenticator (version 0.5.5) I was not able to download lower version.

            Can someone help me to resolve it?

            ...

            ANSWER

            Answered 2022-Mar-28 at 09:41

            I have the same problem

            You're using aws-iam-authenticator 0.5.5, AWS changed the way it behaves in 0.5.4 to require v1beta1.

            It depends on your configuration, but you can try to change the K8s context you're using to v1beta1

            Otherwise switch back to aws-iam-authenticator 0.5.3 - you might need to build it from source if you're using the M1 architecture as there's no darwin-arm64 binary built for it

            Source https://stackoverflow.com/questions/71318743

            QUESTION

            msvc std::lower_bound requires const operator*
            Asked 2022-Mar-18 at 20:51

            I am getting a

            ...

            ANSWER

            Answered 2022-Mar-18 at 20:51

            std::lower_bound takes a Cpp17ForwardIterator, which must also be a Cpp17InputIterator. The Cpp17InputIterator requirements include:

            Expression Return type *a reference, convertible to T

            Here, a is a "value of type X or const X", so MSVC is justified in requiring a const-qualified unary indirection operator; the "or" means that the code using the iterator can use either, and the author of the iterator has to support both. (Note that Cpp17InputIterator differs from Cpp17OutputIterator, where the required operation is *r = o, with r a non-const reference, X&.)

            So your operator* should have const qualification, and return a reference; specifically, a reference to T or const T (this is a Cpp17ForwardIterator requirement). You can satisfy this straightforwardly with using reference = const T& and by making cur_ and cur_valid_ mutable.

            The use of mutable here is entirely legitimate; since operator*() const is idempotent, it is "logically const" and the modifications to the data members are non-observable.

            Source https://stackoverflow.com/questions/71531724

            QUESTION

            MongoParseError: options useCreateIndex, useFindAndModify are not supported
            Asked 2022-Mar-06 at 09:32

            I tried to run it and it said an error like the title. and this is my code:

            ...

            ANSWER

            Answered 2021-Aug-28 at 07:49

            From the Mongoose 6.0 docs:

            useNewUrlParser, useUnifiedTopology, useFindAndModify, and useCreateIndex are no longer supported options. Mongoose 6 always behaves as if useNewUrlParser, useUnifiedTopology, and useCreateIndex are true, and useFindAndModify is false. Please remove these options from your code.

            Source https://stackoverflow.com/questions/68958221

            QUESTION

            BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 61 on Apple Arm
            Asked 2022-Feb-20 at 02:41

            I have installed Android Studio Canary 2020.3.1.22 and trying to run Flutter project on Apple Silicon(ARM) Mac. Unfortunately, it is giving me this error when I try to run default flutter counter app.

            Here is the error I am getting:

            ...

            ANSWER

            Answered 2022-Jan-03 at 06:03

            Basically, I installed jdk using brew install java which was not compatible with my current gradle I guess. So

            1. I uninstalled java first using: brew uninstall java
            2. installed JDK 8 or JDK 11 from azul.
            3. Installed gradle: gradle-6.9-all.zip

            When done, everything worked smoothly.

            Source https://stackoverflow.com/questions/68597899

            QUESTION

            How to install the Bumblebee 2021.1.1 Android Studio Patch?
            Asked 2022-Feb-10 at 19:28

            When I open Android Studio I receive a notification saying that an update is available:

            ...

            ANSWER

            Answered 2022-Feb-10 at 11:09

            This issue was fixed by Google (10 February 2022).

            You can now update Android Studio normally.

            Thank you all for helping to bring this problem to Google's attention.

            Source https://stackoverflow.com/questions/71006400

            QUESTION

            What is the correct way to install Android Studio Bumblebee 2021.1.1 Patch 1
            Asked 2022-Feb-10 at 11:10

            I am sorry but I am really confused and leery now, so I am resorting to SO to get some clarity.

            I am running Android Studio Bumblebee and saw a notification about a major new release wit the following text:

            ...

            ANSWER

            Answered 2022-Feb-10 at 11:10

            This issue was fixed by Google (10 February 2022).

            You can now update Android Studio normally.

            Source https://stackoverflow.com/questions/70999801

            QUESTION

            pymongo [SSL: CERTIFICATE_VERIFY_FAILED]: certificate has expired on Mongo Atlas
            Asked 2022-Jan-29 at 22:03

            I am using MongoDB(Mongo Atlas) in my Django app. All was working fine till yesterday. But today, when I ran the server, it is showing me the following error on console

            ...

            ANSWER

            Answered 2021-Oct-03 at 05:57

            This is because of a root CA Let’s Encrypt uses (and Mongo Atals uses Let's Encrypt) has expired on 2020-09-30 - namely the "IdentTrust DST Root CA X3" one.

            The fix is to manually install in the Windows certificate store the "ISRG Root X1" and "ISRG Root X2" root certificates, and the "Let’s Encrypt R3" intermediate one - link to their official site - https://letsencrypt.org/certificates/

            Copy from the comments: download the .der field from the 1st category, download, double click and follow the wizard to install it.

            Source https://stackoverflow.com/questions/69397039

            QUESTION

            Are memory orders for each atomic correct in this lock-free SPSC ring buffer queue?
            Asked 2022-Jan-06 at 12:33

            I have a ring buffer that looks like:

            ...

            ANSWER

            Answered 2021-Dec-31 at 12:49

            Previous answers may help as background:
            c++, std::atomic, what is std::memory_order and how to use them?
            https://bartoszmilewski.com/2008/12/01/c-atomics-and-memory-ordering/

            Firstly the system you describe is known as a Single Producer - Single Consumer queue. You can always look at the boost version of this container to compare. I often will examine boost code, even when I work in situations where boost is not allowed. This is because examining and understanding a stable solution will give you insights into problems you may encounter (why did they do it that way? Oh, I see it - etc). Given your design, and having written many similar containers I will say that your design has to be careful about distinguishing empty from full. If you use a classic {begin,end} pair, you hit the problem that due to wrapping

            {begin, begin+size} == {begin, begin} == empty

            Okay, so back synchronisation issue.

            Given that the order only effects reording, the use of release in Publish seems a textbook use of the flag. Nothing will read the value until the size of the container is incremented, so you don't care if the orders of writes of the value itself happen in a random order, you only care that the value must be fully written before the count is increased. So I would concur, you are correctly using the flag in the Publish function.
            I did question whether the "release" was required in the Consume, but if you are moving out of the queue, and those moves are side-effecting, it may be required. I would say that if you are after raw speed, then it may be worth making a second version, that is specialised for trivial objects, that uses relaxed order for incrementing the head.

            You might also consider inplace new/delete as you push/pop. Whilst most moves will leave an object in an empty state, the standard only requires that it is left in a valid state after a move. explicitly deleting the object after the move may save you from obscure bugs later.

            You could argue that the two atomic loads in consume could be memory_order_consume. This relaxes the constraints to say "I don't care what order they are loaded, as long as they are both loaded by the time they are used". Although I doubt in practice it produces any gain. I am also nervous about this suggestion because when I look at the boost version it is remarkably close to what you have. https://www.boost.org/doc/libs/1_66_0/boost/lockfree/spsc_queue.hpp

            Source https://stackoverflow.com/questions/70512371

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

            Vulnerabilities

            No vulnerabilities reported

            Install MAJOR

            You can download it from GitHub.

            Support

            Imposter syndrome disclaimer: I want your help. No really, I do. There might be a little voice inside that tells you you're not ready; that you need to do one more tutorial, or learn another framework, or write a few more blog posts before you can help me with this project. I assure you, that's not the case. You don't just have to write code. You can help out by writing documentation, tests, or even by giving feedback about this work. This project can't work without help from people like you. There is a code of conduct to make sure everyone feels safe and welcome which is something I really believe in.
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