ReaderT | epub reader with AppUI effect

 by   HaowenLee Java Version: Current License: No License

kandi X-RAY | ReaderT Summary

kandi X-RAY | ReaderT Summary

ReaderT is a Java library. ReaderT has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

Based on the modification of FBReaderJ, it imitates the epub reader with AppUI effect. (In development...)

            kandi-support Support

              ReaderT has a low active ecosystem.
              It has 29 star(s) with 11 fork(s). There are 1 watchers for this library.
              It had no major release in the last 6 months.
              There are 8 open issues and 5 have been closed. On average issues are closed in 59 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of ReaderT is current.

            kandi-Quality Quality

              ReaderT has 0 bugs and 0 code smells.

            kandi-Security Security

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

            kandi-License License

              ReaderT does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              ReaderT releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.

            Top functions reviewed by kandi - BETA

            kandi has reviewed ReaderT and discovered the below as its top functions. This is intended to give you an instant insight into ReaderT implemented functionality, and help decide if they suit your requirements.
            • Do the actual work .
            • Synchronize the bookmarks .
            • Process a text line .
            • Updates the positions according to the float positions .
            • Internal method used to draw this image .
            • Loads books .
            • Process text .
            • Start downloading a file .
            • Initializes the service .
            • Parses an ATOMDateConstruct .
            Get all kandi verified functions for this library.

            ReaderT Key Features

            No Key Features are available at this moment for ReaderT.

            ReaderT Examples and Code Snippets

            No Code Snippets are available at this moment for ReaderT.

            Community Discussions


            Why Reader implemented based ReaderT?
            Asked 2022-Jan-11 at 17:11


            I found that Reader is implemented based on ReaderT using Identity. Why don't make Reader first and then make ReaderT? Is there specific reason to implement that way?



            Answered 2022-Jan-11 at 17:11

            They are the same data type to share as much code as possible between Reader and ReaderT. As it stands, only runReader, mapReader, and withReader have any special cases. And withReader doesn't have any unique code, it's just a type specialization, so only two functions actually do anything special for Reader as opposed to ReaderT.

            You might look at the module exports and think that isn't buying much, but it actually is. There are a lot of instances defined for ReaderT that Reader automatically has as well, because it's the same type. So it's actually a fair bit less code to have only one underlying type for the two.

            Given that, your question boils down to asking why Reader is implemented on top of ReaderT, and not the other way around. And for that, well, it's just the only way that works.

            Let's try to go the other direction and see what goes wrong.



            Using "deriving via" with a type family
            Asked 2022-Jan-01 at 21:35

            I have a typeclass with a default implementation, and would like to provide a simple way to derive the typeclass if a user wants to use their custom monad.

            Here's a solution someone else provided me:



            Answered 2022-Jan-01 at 21:35

            As the error message says, your associated type FooCtx depends only on ctx, but not on m, thus creating a potential for ambiguity like this:



            How to return values with nested Reader monads with cats?
            Asked 2021-Dec-25 at 10:20

            Is there a way to avoid calling the "run" method twice and doing it just once from the main method or this is the right way to do it in nested Readers?



            Answered 2021-Dec-25 at 10:20

            I'm not sure why you choose to define your services this way but if your question is to avoid calling run in sumAndShow you could lift your Reader/IO into ReaderTs with lift/liftF and compose them with a ReaderT.ask:



            Cannot represent equality constraint as a custom constraint
            Asked 2021-Dec-10 at 21:59

            I have a function type declaration



            Answered 2021-Dec-10 at 21:59

            I think this achieves what you want:



            Haskell Servant - What is the Purpose of serveWithContext and What Does it do That a ReaderT Can't?
            Asked 2021-Nov-22 at 22:16

            I'm trying to understand the purpose of Servant's serveWithContext function. The documentation states that it's not a replacement for the ReaderT Monad, but I'm uncertain as to what problem it's trying to solve that isn't already addressed by ReaderT.

            For example, this is from the example on the servant-auth GitHub page:



            Answered 2021-Nov-22 at 22:16

            It seems like the machinery of Servant doesn't make assumptions about the underlying monad in which you choose to define the handlers. This means it can't force you to choose any particular monad (like, say, ReaderT) in response to some combinator present in the routes, and it doesn't "react" to your choice of monad in order to enable some behavior.

            In the case of servant-auth, we need to provide some extra information to servant about how to handle cookies and the like.

            What the Context system does it to collect that extra information in a positional parameter for route, hoistServerWithContext and serveWithContext, while still letting you choose whatever monad you wish. The exact type of the parameter depends on what route combinators are present in the API.

            The servant tutorial has some paragraphs about Contexts:

            When someone makes a request to our "private" API, we’re going to need to provide to servant the logic for validating usernames and passwords. [...] Servant 0.5 introduced Context to handle this. [...] the idea is simple: provide some data to the serve function, and that data is propagated to the functions that handle each combinator.

            As for

            Furthermore, serveWithContext appears to be passing these values in twice

            I'm not sure, but I suspect checkCreds taking cs and jwts as parameters is done only as an example of how authentication would be performed if done purely in handlers, without help from Servant itself. In contrast, the protected endpoint already receives the result of the authentication as a parameter; it doesn't have to perform it itself.

            In a real-world application, server wouldn't take those parameters, they would only be passed in the Context.



            Haskell, Sqlite, Pools and Servant
            Asked 2021-Nov-04 at 00:17

            I've written a simple Servant application that stores some information in an SQLite db file. Also, I created a generic function that runs a DB query:



            Answered 2021-Nov-03 at 20:24

            I believe your problem is caused by a lack of understanding of monads. There are plenty of tutorials on the web, so allow me to simplify the issue and explain it in the context of your code.

            When in Haskell we write x :: Int, we mean that x is an integer value. In the definition of x we can write



            Value is discarded in Haskell
            Asked 2021-Oct-08 at 21:31

            I don't understand why this happens:



            Answered 2021-Oct-08 at 15:29

            GHC 8.10.3 does complain about this with -Wall (after I changed initConfig to readConfig in your code):

            A do-notation statement discarded a result of type ‘IO ()’
            Suppress this warning by saying ‘_ <- print <$> readConfig c’

            You have readConfig c of type IO Int. Then you fmap print, giving something with a type of IO (IO ()). Since the result isn't bound to a variable in the do block, it is thrown away.

            In the fmap's type Functor f => (a -> b) -> f a -> f b we have f being IO, a being Int, and b being IO (). So it is used with the type (Int -> IO ()) -> IO Int -> IO (IO ()).

            This would work:



            How to implement custom Monad instance, especially for IObservable in FSharpPlus?
            Asked 2021-Jul-08 at 07:04

            FSharpPlus provided monad CE and several monad transformers, and I want to use ReaderT<'a, IObservable<'b>> with FSharpPlus's monad CE, which requires a definition of monad instance of IObservable.

            An example of desired code is



            Answered 2021-Jul-01 at 09:13

            At the time of writing this answer there is no way to have extension methods visible to trait constraints, although there is a longstanding RFC and PR in the F# compiler to implement it.

            So, for the time being in order to add a type to an abstraction (like Monad) you need to either edit the type's source to add the required method or the abstraction source.

            The former is basically impossible for IObservable I mean you can try submit them a PR, but the latter option is more feasible in the short term: submit a PR or at least open an issue in F#+ to add IObservable directly as Monad.



            How to use the latest version of the Parsec.Indent library?
            Asked 2021-Jun-25 at 14:04

            It might seem that this question is a duplicate of this question, however either Parsec or the Indent library has changed since 2012 and none of the old examples I have found for the indent library compile with the latest versions.

            I want to make a parser for a programming language where indentation is part of the syntax (used to indicate scopes), in order to achieve this I want to make use of the Text.Parsec.Indent library, but I am at a loss on how to use it. It is clear to me that some modifications/custom parser type has to be made, but my limited knowledge on the State monad and surface level understanding of parsec seem to not be enough.

            Let's say you wanted to make a parser for a simple list of ints like below. How would one achieve this?



            Answered 2021-Jun-25 at 14:04

            Okay after some deep diving into the source code and looking at the tests in the indents GitHub repository I managed to create a working example.

            The following code can parse a simple indented list:



            Haskell Persistent Library - How do I get data from my database to my frontend?
            Asked 2021-Jun-24 at 18:44

            Hi and thanks for your time. I'm trying to create a website that features a button that increments a counter. I want the current counter to be persistent and if somebody goes to my page, the current counter should be displayed. A request should be send every time I click the button to increment the counter. The request does not contain any information about the counter value. The server - in my case a warp web server - should update the counter value in the database, read the value after the update and then send it to the frontend if successful, of an error message if not.

            So far, only the updating works, since I did not manage to figure out how to get the data from the database to the frontend. Here is the code from my Repository module that should do the updating:



            Answered 2021-Jun-24 at 18:44

            You can ignore all the monadic parts of getBy's type signature. Provided you get your code to type check, counterEntity has type Maybe (Entity Counter), and that's all that's important here.

            The counterEntity is Nothing if the query fails (i.e., no record in the table for that counter). Otherwise, it's Just an Entity Counter containing the retrieved record:


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


            No vulnerabilities reported

            Install ReaderT

            You can download it from GitHub.
            You can use ReaderT like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the ReaderT component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            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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