lf | Fully Decentralized Fully Replicated Key/Value Store

 by   zerotier C Version: 1.0.0.0 License: Non-SPDX

kandi X-RAY | lf Summary

kandi X-RAY | lf Summary

lf is a C library. lf has no bugs, it has no vulnerabilities and it has medium support. However lf has a Non-SPDX License. You can download it from GitHub.

LF (pronounced "aleph") is a fully decentralized fully replicated key/value store. Fully decentralized means anyone can run a node without obtaining special permission and all nodes are effectively equal. Fully replicated means every node stores the entire data set. LF is built on a directed acyclic graph (DAG) data model that makes synchronization easy and allows many different security and conflict resolution strategies to be used. One way to think of LF's DAG is as a gigantic conflict-free replicated data type (CRDT). Proof of work is used to rate limit writes to the shared data store on public networks and as one thing that can be taken into consideration for conflict resolution. Other things that can be considered (at the querying client's discretion) are local subjective heuristics at the node and certificates issued by a certificate authority. The name LF comes from the short story The Aleph by Jorge Luis Borges and the novel Mona Lisa Overdrive by William Gibson. Borges' story involves a point in space that contains all other points, a fitting metaphor for a data store where every node stores everything. Gibson's novel features a sci-fi take on Borges' concept. At one point a character calls it the "LF" because "aleph" has been mis-heard as an acronym. We used LF because there's already an open source project called Aleph, it gives the command line client lf a short name, and because two levels of nerdy literary recursion are cool.
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            kandi-support Support

              lf has a medium active ecosystem.
              It has 817 star(s) with 20 fork(s). There are 35 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 3 open issues and 11 have been closed. On average issues are closed in 13 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of lf is 1.0.0.0

            kandi-Quality Quality

              lf has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              lf has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              lf releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.

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            lf Key Features

            No Key Features are available at this moment for lf.

            lf Examples and Code Snippets

            No Code Snippets are available at this moment for lf.

            Community Discussions

            QUESTION

            Is it possible for a c function to accept both double and long double arguments?
            Asked 2022-Apr-08 at 11:09

            I have a function, mag, in a file mag.c that calculates the magnitude of an array.

            ...

            ANSWER

            Answered 2022-Apr-08 at 03:51

            You are correct that a function argument will be implicitly converted to the expected type, if possible. However, this implicit conversion will not go so far as to convert the object or the array that the function argument is pointing to. It will only convert the function argument itself (i.e. the pointer).

            Therefore, in C, you will have to create two separate functions, or do something ugly, like creating a single function which takes a void * as an argument, which will be interpreted either as a long double * or a double * depending on the value of an additional argument:

            Source https://stackoverflow.com/questions/71789746

            QUESTION

            Combine two formulas in power query
            Asked 2022-Apr-07 at 13:37

            Need to generate the end date based on Vesting type column

            I am able to generate formulas to create the end date as per the below column

            I have been able to generate the formulas in power query in two separate tables for the same data using the codes below.

            Graded vesting formula

            ...

            ANSWER

            Answered 2022-Apr-07 at 13:37

            You could use below code. Change column names as needed to include the line feeds

            Source https://stackoverflow.com/questions/71781305

            QUESTION

            Do you know why the output for the BMI value is always 0.0000?
            Asked 2022-Mar-23 at 03:12

            Here's my code. No matter what I enter for the weight and height, it always outputs 0.0000000. I'm not sure what is wrong with it.

            ...

            ANSWER

            Answered 2022-Mar-23 at 02:42

            Make double bmi(w,h) to double bmi(double w, double h). Without explicit declaration of argument type, it defaults to int.

            Source https://stackoverflow.com/questions/71581148

            QUESTION

            maven-checkstyle-plugin failed to parse Java 'record'
            Asked 2022-Mar-16 at 16:42

            I'm trying to setup checkstyle in our project - but seems like Maven (v3.8.3) or maven-checkstyle-plugin (v3.1.1) itself are not aware of Java 14's record (we use Java 17).

            ...

            ANSWER

            Answered 2022-Mar-16 at 16:42

            The plugin by default comes with Checkstyle version 8.29. Try explicitly defining the CheckStyle version (plus a small version bump to 3.1.2). For example, with version 9.2:

            Source https://stackoverflow.com/questions/71500951

            QUESTION

            aspnet-codegenerator error: "path is empty"
            Asked 2022-Jan-20 at 15:49

            I'm attempting to scaffold the Identity pages for a new .NET 6.0 project (created from the ASP.NET Core MVC template). When I run the following command I get the error "path is empty" (I also included the build command output to show the project builds successfully).

            ...

            ANSWER

            Answered 2022-Jan-20 at 15:49

            As mentioned by the comment on the question and on this site

            https://github.com/dotnet/Scaffolding/issues/1713

            Removing the nuget package Microsoft.AspNetCore.Identity from all projects in the relevant solution solves the problem.

            In many cases (also in mine) its enough to reference the nuget package Microsoft.AspNetCore.Identity.EntityFrameworkCore

            Source https://stackoverflow.com/questions/70119631

            QUESTION

            replacing newlines with the string '\n' with POSIX tools
            Asked 2022-Jan-15 at 11:55

            Yes I know there are a number of questions (e.g. (0) or (1)) which seem to ask the same, but AFAICS none really answers what I want.

            What I want is, to replace any occurrence of a newline (LF) with the string \n, with no implicitly assumed newlines... and this with POSIX only utilities (and no GNU extensions or Bashisms) and input read from stdin with no buffering of that is desired.

            So for example:

            • printf 'foo' | magic should give foo
            • printf 'foo\n' | magic should give foo\n
            • printf 'foo\n\n' | magic should give foo\n\n

            The usually given answers, don't do this, e.g.:

            • awk
              printf 'foo' | awk 1 ORS='\\n gives foo\n, whereas it should give just foo
              so adds an \n when there was no newline.
            • sed
              would work for just foo but in all other cases, like:
              printf 'foo\n' | sed ':a;N;$!ba;s/\n/\\n/g' gives foo, whereas it should give foo\n
              misses one final newline.
              Since I do not want any sort of buffering, I cannot just look whether the input ended in an newline and then add the missing one manually.
              And anyway... it would use GNU extensions.
              sed -z 's/\n/\\n/g'
              does work (even retains the NULs correctly), but again, GNU extension.
            • tr
              can only replace with one character, whereas I need two.

            The only working solution I'd have so far is with perl:
            perl -p -e 's/\n/\\n/'
            which works just as desired in all cases, but as I've said, I'd like to have a solution for environments where just the basic POSIX utilities are there (so no Perl or using any GNU extensions).

            Thanks in advance.

            ...

            ANSWER

            Answered 2022-Jan-12 at 06:42

            Here is a tr + sed solution that should work on any POSIX shell as it doesn't call any gnu utility:

            Source https://stackoverflow.com/questions/70675246

            QUESTION

            GEKKO: Error in syntax of function string
            Asked 2022-Jan-15 at 05:50

            I'm having trouble understanding an error message I'm getting from my GEKKO model.

            For context, this model is supposed to optimize the gas spring force and dimension parameters of a gas-spring assisted door to minimize the operator force required to close the door. My intent is to calculate the required force at a series of angles between 0 and 90 degrees, then sum the absolute value of the force at all angles and minimize that value. There is also a constraint on the gas spring length so the optimization doesn't come up with unrealistic dimension parameters. I've defined the force and other values that need to be computed at each angle as lists of Intermediate variables.

            The error appears to be related to one of these lists of Intermediate variables, but I don't know how to interpret "Position: 2" in the error message, let alone "Error in syntax of function string". I've searched in some other answers on here, but I haven't found a clear answer on how to use this position information to troubleshoot the model. What is the message trying to tell me?

            ...

            ANSWER

            Answered 2022-Jan-15 at 05:44

            One way to locate the error is to open the run directory and inspect the text model file gk_model0.apm.

            Source https://stackoverflow.com/questions/70713632

            QUESTION

            What is the difference between "* text=auto" and "* text=auto eol=lf"?
            Asked 2022-Jan-10 at 23:27

            I was reading about the .gitattributes file and the rule to force line endings in some tutorials it's written like * text=auto and in some others, it's like * text=auto eol=lf at the first line of the file.

            Are there any differences? what does the first one exactly do? Does it even force any line endings?

            Also in some repositories it's mentioned that * text=auto preforms LF normalization! I don't know whether it's true or not.

            ...

            ANSWER

            Answered 2022-Jan-10 at 23:27

            There's a difference between these attributes. text asks Git to perform line ending conversion. Any time Git does this, it will store LF endings in the repository, and it will convert them when it checks files out in the working tree. text=auto asks Git to search the beginning of the file for a NUL byte, and if it finds one, then the file is binary and conversions are not performed; otherwise, the file is text, and conversions are performed. This usually works fine in most cases, and is a sensible default.

            By default, Git honors several configuration variables to decide what line ending conversion should be used in the working tree (LF or CRLF), unless the eol attribute is set. If eol is set, then (a) the file is automatically set to be text and (b) that line ending is always used.

            So in the former case, * text=auto says, "Guess whether this is a text file, and if it is, check this file out with the user's preferred line endings." The eol=lf applies only to files that are guessed as text in this case, as of Git 2.10. In general, eol applies if text is set explicitly, text=auto is set and the file is detected as text, or if text is left unspecified; in Git 2.10 and newer, it doesn't affect files explicitly marked -text or detected as binary with text=auto.

            However, if you're using older versions of Git, this can cause some binary files to be mishandled, since it will force them to always be text. If your repository contains only text files, then it will work, but this is better written as * text eol=lf. Otherwise, you can specify different types of files separately:

            Source https://stackoverflow.com/questions/70633469

            QUESTION

            e^x without math.h
            Asked 2021-Dec-22 at 13:15

            I'm trying to find ex without using math.h. My code gives wrong anwsers when x is bigger or lower than ~±20. I tried to change all double types to long double types, but it gave some trash on input.

            My code is:

            ...

            ANSWER

            Answered 2021-Dec-22 at 13:15

            When x is negative, the sign of each term alternates. This means each successive sum switches widely in value rather than increasing more gradually when a positive power is used. This means that the loss in precision with successive terms has a large effect on the result.

            To handle this, check the sign of x at the start. If it is negative, switch the sign of x to perform the calculation, then when you reach the end of the loop invert the result.

            Also, you can reduce the number of iterations by using the following counterintuitive condtion:

            Source https://stackoverflow.com/questions/70382318

            QUESTION

            Trying to concatenate the last 10 lines of a log file to a batch variable using powershell
            Asked 2021-Nov-10 at 18:38

            I'm new to Windows scripting, but have quite a lot of experience in bash and python.

            Here's the issue. Whenever I run this, (and this is the best result I've gotten so far) it makes it most of the way through and then errors with "The filename, directory name, or volume label syntax is incorrect."

            Ignore the code designed for newlines, I'm still fighting with that as well.

            ...

            ANSWER

            Answered 2021-Nov-10 at 02:41

            Changed

            echo %LAST_TEN%

            to

            echo !LAST_TEN!

            Source https://stackoverflow.com/questions/69904441

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

            Vulnerabilities

            No vulnerabilities reported

            Install lf

            Both a command line client and a full node implementation are present in the same lf binary. Just run it and it will print help.

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            If you find a bug or want to contribute to LF, please feel free to open a pull request!.
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            https://github.com/zerotier/lf.git

          • CLI

            gh repo clone zerotier/lf

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            git@github.com:zerotier/lf.git

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