guru | Implements SuperMemo-2 , a spaced repetition algorithm | Learning library

 by   adamgibbons JavaScript Version: Current License: No License

kandi X-RAY | guru Summary

kandi X-RAY | guru Summary

guru is a JavaScript library typically used in Tutorial, Learning, Example Codes applications. guru has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Implements SuperMemo-2, a spaced repetition algorithm that optimizes learning based on assigning difficulty levels to paired associates.
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              guru has a low active ecosystem.
              It has 21 star(s) with 4 fork(s). There are 2 watchers for this library.
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              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of guru is current.

            kandi-Quality Quality

              guru has no bugs reported.

            kandi-Security Security

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

            kandi-License License

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

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

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            Community Discussions

            QUESTION

            PowerShell: Running Script from Visual Studio Code Works, Running from PS Command Line Fails
            Asked 2021-Jun-11 at 18:07

            I have a PowerShell script that I have developed and tested in Visual Studio Code that runs without error. However, when I attempt to run the same script from a PowerShell command line, it fails with several errors, the first one being a complaint about the use of Param on the first line of the script. I have PS 5.1 installed on my machine.

            When launched from the command line, here is what I execute:

            powershell -ExecutionPolicy Bypass -File Export_PI.ps1 -Project Catalyst-DHT

            When I run this script from Visual Studio Code, I substitute a hard-coded value in lieu of the parameter -Project for testing purposes. When I run it from the PS command line, this is the first error I get:

            Param : The term 'Param' is not recognized as the name of a cmdlet, function, script file, or operable program.

            I have read elsewhere that this typically occurs when Param() is not the first non-commented line in the script. In my script, it is the first non-commented line:

            $ProjectName = Param([String]$Project)

            I'm not a PowerShell guru, so this could well be a newbie mistake. I'm hoping someone can help me figure it out. Thanks.

            ...

            ANSWER

            Answered 2021-Jun-11 at 18:07

            The line

            I have PS 5.1 installed on my machine.

            is most likely the issue you are having. VSC uses PowerShell Core (6 <=) and not PowerShell Desktop (6 >)

            Also the line

            Source https://stackoverflow.com/questions/67940974

            QUESTION

            How should a "Bridge" design pattern be implemented for more than two hierarchies?
            Asked 2021-Jun-10 at 00:51

            This explains the "Bridge" pattern I'm referring to: https://refactoring.guru/design-patterns/bridge

            Here's a scenario from the post above:

            Say you have a geometric Shape class with a pair of subclasses: Circle and Square. You want to extend this class hierarchy to incorporate colors, so you plan to create Red and Blue shape subclasses. However, since you already have two subclasses, you’ll need to create four class combinations such as BlueCircle and RedSquare.

            The problem this scenario presents:

            Adding new shape types and colors to the hierarchy will grow it exponentially. For example, to add a triangle shape you’d need to introduce two subclasses, one for each color. And after that, adding a new color would require creating three subclasses, one for each shape type. The further we go, the worse it becomes.

            To avoid this problem, we implement the Bridge pattern like so:

            Extract the color-related code into its own class with two subclasses: Red and Blue. The Shape class then gets a reference field pointing to one of the color objects. Now the shape can delegate any color-related work to the linked color object. That reference will act as a bridge between the Shape and Color classes. From now on, adding new colors won’t require changing the shape hierarchy, and vice versa.

            I understand the how and why of this implementation.

            But what if we need a third hierarchy, e.g. BorderStyle (where a border style can be Straight, Wavy, or ZigZag?)

            I guess we could implement a second Implementor class for BorderStyle and pass it into a Shape constructor like so:

            ...

            ANSWER

            Answered 2021-Jun-10 at 00:45

            Yes, this works. There's nothing wrong with adding two Bridge relationships to one abstraction (beyond the complexity of juggling three different hierarchies).

            Decorator would certainly not work for this purpose, because it maintains a single hierarchy, which is known to the client. The Implementor hierarchy in a Bridge (or hierarchies in this case) are unknown to the client.

            I would make a clarification to the linked article, where it says,

            You want to extend this [shape] class hierarchy to incorporate colors

            I think this oversimplifies the motivation for a Bridge. The Implementors are not just some attributes you choose to add to your Abstraction to enhance it. Your Abstraction requires an Implementor in order to function at all. The method implementations within subclasses of Abstraction generally do little except call methods of the Implementor.

            The Abstraction represents your high-level, business API, while the Implementor represents a lower-level, primitive API. They are both abstractions, but at different levels. I don't think this is conveyed adequately by shape & color examples because shape and color seem like abstractions at the same level. Both shape and color would be known to the clients, and neither one strictly depends on the other.

            So a Bridge is applied for more specific reasons than the given example, but you certainly can have two.

            Source https://stackoverflow.com/questions/67909547

            QUESTION

            test if words are in a string (grepl, fuzzyjoin?)
            Asked 2021-Jun-07 at 17:20

            I need to do a match and join on two data frames if the string from two columns of one data frame are contained in the string of a column from a second data frame.

            Example dataframe:

            ...

            ANSWER

            Answered 2021-Jun-07 at 14:20

            The documentation says that match_fun should be a "Vectorized function given two columns, returning TRUE or FALSE as to whether they are a match." It's not TRUE or FALSE, it's a function that returns TRUE or FALSE. If we switch your order, we can use stringr::str_detect, which does return TRUE or FALSE as required.

            Source https://stackoverflow.com/questions/67873046

            QUESTION

            Having trouble with web scraping using Beautiful Soup
            Asked 2021-Jun-06 at 22:19

            I'm having hard time web scraping this web page top-programming-guru.
            I was looking to have retrieve a list of all the youtube channels listed in the page.
            I'm using BeautifulSoup, I took a look at source code of page, Then and try this code:

            ...

            ANSWER

            Answered 2021-Jun-06 at 22:09

            The data is dynamically loaded. Use selenium or similar to allow javascript to load then scrape.

            Source https://stackoverflow.com/questions/67862484

            QUESTION

            Python app not able to access from azure app services
            Asked 2021-Jun-05 at 06:28

            I have deployed a Python app to Azure app service (OS: Linux, Python) from Visual Studio Code. I can able to see the files in the wwwroot folder as well as in the app service, but when I am trying to access the app service by URL, the login page not displayed. Please refer to the code below:

            ...

            ANSWER

            Answered 2021-Jun-04 at 03:03

            You need add startup command.

            Source https://stackoverflow.com/questions/67805036

            QUESTION

            I have a problem with get billings from paypal
            Asked 2021-Jun-01 at 16:38

            I have a big problem with the webhook for confirms a subscribe agreements. I'm used the SDK [https://github.com/paypal/PayPal-Python-SDK/blob/master/samples/subscription/billing_agreements/get.py] If somebody could help me, my errors is the next:

            Traceback (most recent call last):

            File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/django/core/handlers /exception.py", line 34, in inner response = get_response(request)

            File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/django/core/handlers/base.py", line 115, in _get_response response = self.process_exception_by_middleware(e, request) File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/django/core/handlers/base.py", line 113, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs)

            File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view return view_func(*args, **kwargs)

            File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/django/views/generic/base.py", line 71, in view return self.dispatch(request, *args, **kwargs)

            File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/django/views/generic/base.py", line 97, in dispatch return handler(request, *args, **kwargs)

            File "/home/jjorge/src/guru/guru-payments/apps/paypal/views.py", line 69, in post settings.PAYPAL_CLIENT_SECRET

            File "/home/jjorge/src/guru/guru-payments/apps/paypal/services.py", line 34, in execute paypal_secret_id

            File "/home/jjorge/src/guru/guru-payments/apps/paypal/payment_methods.py", line 154, in get_billing_agreement 'client_secret': paypal_client_secret

            File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/paypalrestsdk/resource.py", line 110, in find return cls(api.get(url, refresh_token=refresh_token), api=api)

            File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/paypalrestsdk/api.py", line 268, in get return self.request(util.join_url(self.endpoint, action), 'GET', headers=headers or {}, refresh_token=refresh_token)

            File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/paypalrestsdk/api.py", line 171, in request return self.http_call(url, method, data=json.dumps(body), headers=http_headers) File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/paypalrestsdk/api.py", line 214, in http_call return self.handle_response(response, response.content.decode('utf-8')) File "/home/jjorge/venvs/payments/lib/python3.7/site-packages/paypalrestsdk/api.py", line 231, in handle_response

            raise exceptions.ResourceNotFound(response, content)

            paypalrestsdk.exceptions.ResourceNotFound: Failed. Response status: 404. Response message: Not Found. Error message: {"name":"RESOURCE_NOT_FOUND","debug_id":"9a7aa1a765763","message":"The requested resource was not found","information_link":"https://developer.paypal.com/docs/api/payments.billing-agreements#errors","details":[{"issue":"Requested resource ID was not found."}]}

            ...

            ANSWER

            Answered 2021-Jun-01 at 16:38

            Deprecation notice: The /v1/payments/billing-agreements endpoints are deprecated. Use the /v1/billing/subscriptions

            That is my solution, I had to implement a new function with the new api

            Source https://stackoverflow.com/questions/67781169

            QUESTION

            Spring Data MongoDB - Long values are coming null in response using Repository query
            Asked 2021-May-19 at 17:46

            I am developing Spring Boot MongoDB example using V2.4.5. In this example when I am doing repository query, Long fields values are not getting mapped. Sample document value from MongoDB.

            ...

            ANSWER

            Answered 2021-May-19 at 17:46

            The reason why you get null, Mongodb default field of id is _id. And spring data converts id to _id in any classes. When you try to run, you can check the console find using query: { "user._id" : 1} fields: Document{{}}. It mentioned _id there also which is not mapped to database, database has id. (No underscore). To over come this problem ,you can use @Field.

            Source https://stackoverflow.com/questions/67607099

            QUESTION

            What attribute's are appropriate for log-in credentials
            Asked 2021-May-19 at 08:56

            I'm currently working on a school project to create a quiz program (local-host) to assess students based on their marks on the quiz. So in that project's database, I have a "student" table and also a "student_name" table. I would have put it in the same table but my teacher told me to put it into two different tables as a normalization step to reach 3nf (getting rid of "transitional functions")? Below are the pictures of my tables: (Sorry, it's in Malay) "murid"(student) table "nama_murid"(student_name) table

            So the problem is in the login page. Currently I'm using a "no_kp_murid"(IC number) - "katalaluan"(password) combination to log-in. So it logs in fine, but in the main_menu I'd like to display the "nama_murid"(student's name) attribute. The problem is, it displays the first student name registered and not the actual student-that-logged-in's name. Here's my code:

            ...

            ANSWER

            Answered 2021-May-19 at 08:56

            There are a few errors that I found in your code. First of all, the student name table (nama_murid) needs to have a foreign key. In this case, the nama_murid table needs to have student_id similar to the murid table.

            Your new nama_murid table should look like this:-

            no_kp_murid (Student Id) ---- email_murid (Student email) ---- nama_murid (Student Name)

            Here no_kp_murid is the foreign key that would relate the student login table to the student name table.

            Regarding the code, there is an easier way to achieve what you want.

            Source https://stackoverflow.com/questions/67599536

            QUESTION

            C++ Evil Getter Setter against Factory/Builder design pattern
            Asked 2021-May-14 at 17:49

            I'm trying to learn the design pattern norme (like refacturing guru), and i have some problem to understand how i could merge the idea of bad design with public getter/setter and factory/Builder that need "out of constructor" variable setter.

            for example with the answer of this article to article to Design pattern

            As you can understand, each object will need a lot of informations, and adding part should set the needed informations, but to be able to do it, it need accessor to my variable outside the constructor.

            Help me figure out what i'm missing.

            --- Edit To be more precise, Let's say i have 2 class : CombatObject <---- Spaceships And i have a factory that will create different type of spaceships (principally because i don't want to create more than 10 class just to change the stats of the objects)

            in this case, getter/setter are not a bad design (or are they?)

            ...

            ANSWER

            Answered 2021-May-14 at 17:49

            Ok i think the comments are right, the way i see the solution is the following :

            No Setter, the only way to interact with the object will be with function with a purpose. For exemple, modify HP, add a DoDamage function that will return false if the ship is destoyed and will internally modify the hp (and maybe the damage too, etc..)

            Getter can be public, but of course, only "const &"

            Clone method is a good idea for future development (prototype pattern)

            Source https://stackoverflow.com/questions/67537957

            QUESTION

            Attaching an EFS volume to Fargate?
            Asked 2021-May-14 at 13:54

            I know this question has been asked before, and I've seen several of the SO responses and read the AWS docs on the subject... I have a terraform module that, in part, builds out an ECS service, cluster, task, and Fargate container:

            ...

            ANSWER

            Answered 2021-May-14 at 13:54

            The whole problem had nothing to do with AWS, but the server I am running (weblogic) failed to start because I was trying to mount EFS in /, which cannot be done as it would overlay many critical startup and credential files. If I had the whole filesystem already on EFS (which I did not, I used a blank filesystem), then this likely would have been fine. I mounted it successfully to a lower subdirectory and the container spun up and is running.

            Source https://stackoverflow.com/questions/67526016

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