mind | A productive mind has an empty stack | State Container library

 by   sayanarijit Rust Version: Current License: MIT

kandi X-RAY | mind Summary

kandi X-RAY | mind Summary

mind is a Rust library typically used in User Interface, State Container, Vue, Nodejs, MongoDB, Symfony applications. mind has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A productive mind has an empty stack
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            kandi-support Support

              mind has a low active ecosystem.
              It has 37 star(s) with 1 fork(s). There are 3 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 0 open issues and 17 have been closed. On average issues are closed in 209 days. There are 3 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of mind is current.

            kandi-Quality Quality

              mind has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              mind 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

              mind releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.

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            mind Key Features

            No Key Features are available at this moment for mind.

            mind Examples and Code Snippets

            No Code Snippets are available at this moment for mind.

            Community Discussions

            QUESTION

            Read committed isolation level and truncate table inside snowflake transaction
            Asked 2021-Jun-15 at 08:18

            Just a curious question in my mind and I thought of asking to Snowflake experts to clarify this question. We know that Snowflake default isolation level is read committed; I have one transaction let us A in which I am truncating data from Table T1 and Loading the Table T1 using transformed fresh data; at the same time I have another transaction say B is trying to read the data from Table T1 while getting this data truncated in transaction A; would I be able read the data from Table T1 in transaction B which it is still getting truncated in another transaction A.

            My mind says yes; transaction B should be able to read it from Table T1 because transaction A still in progress and not yet committed.

            ...

            ANSWER

            Answered 2021-Jun-15 at 07:53

            Try running these 2 scripts in two different tabs with app.snowflake.com:

            Script 1:

            Source https://stackoverflow.com/questions/67981495

            QUESTION

            Dealing with slow Electron startup
            Asked 2021-Jun-15 at 08:10
            Context

            I have spent some hours playing with Electron and I have observed that it consistently takes more than 2.5 seconds to draw a trivial html file to the screen. The timeline is roughly as follows:

            • 60 ms: app ready event is triggered; we create a window using new BrowserWindow()
            • 170 ms: a blank window appears on the screen
            • 2800 ms: the window shows the specified HTML

            I have set up a repository with my code, which is derived from Electron's quick start docs.

            Regarding my machine, I am running Windows 10 on a ThinkPad T460 from 2016 with a SSD and enough memory.

            Questions

            Shipping an application that shows a blank window for so long upon startup is a no-go for me. I assume most people developing Electron apps think similarly. Hence my first question: am I doing something wrong? Or is this the expected loading time for a trivial Electron app?

            Assuming this is normal behavior, what is the common way to deal with this problem? Some ideas come to mind:

            1. Asking Electron to show a splash screen: unless there is specific built-in functionality for this, it seems like a no-go, since the splash screen itself would be shown only after 2.5 seconds.
            2. Hide the app's window until it is rendered (using the ready-to-show event), so no blank window is shown. This isn't ideal, since it means that the user doesn't get any feedback whatsoever that the application is actually loading.
            3. Create a wrapper application (using native code) that displays a splash screen, launches electron and hides itself once the electron window is shown. Kind of defeats the purpose of using Electron in the first place, because you end up writing native code and adding accidental complexity.
            4. Setting the background color of the window to something resembling your app, as suggested by the docs. This just doesn't look very well.

            Given this must be a common problem, I hope standard solutions have been found by the community. I'd be glad if someone can point me in the right direction.

            ...

            ANSWER

            Answered 2021-Jun-14 at 02:38

            What if you hid your window until it's ready to show, then show your window, and while your window's hidden show a loading spinner.

            First only show your main window until after it's ready:

            Source https://stackoverflow.com/questions/67874431

            QUESTION

            Why does COUNT(*) in my SQL query return several values? How to get one single value for total rows found?
            Asked 2021-Jun-15 at 06:16

            I have a Django class getting some order data from a PostreSQL database. I need to get the number of rows found in a query.

            Trying to get the found rows count from the following query with COUNT(*):

            ...

            ANSWER

            Answered 2021-Feb-17 at 04:10

            COUNT(expr) will return a count of the number of non-null values of expr in the rows that are retrieved by the SELECT.

            In your case, you're grouping a bunch togheter and it returns the count for each grouped result row. You'll probably get the result you're looking for, wrapping it in a subselect.

            For example:

            Source https://stackoverflow.com/questions/66231058

            QUESTION

            Database connection object is not callable exception thrown with Python Django SQL Alchemy database pooling. Why?
            Asked 2021-Jun-15 at 02:16
            What I'm trying to achieve

            Create a database connection pool in Django. The connection pool is connected to a PostgreSQL database by using SQLAlchemy's connection pooling with django-postgrespool2.

            Thrown exception

            'psycopg2.extensions.connection' object is not callable is thrown when running the following line of code poolConnection = dbPool.connect(). Printing the dbPool object and type displays

            Code

            Database helper class which creates the connection to the PostgreSQL database and creates the connection pool:

            ...

            ANSWER

            Answered 2021-Mar-09 at 07:29

            According to the QueuePool docs the first argument should be 'a callable function that returns a DB-API connection object'.

            You've passed the result of the called function to the QueuePool object as the first argument instead of the function itself. Remove the parenthesis to solve the issue:

            Source https://stackoverflow.com/questions/66539439

            QUESTION

            What is the corrct way of running useEffect hook depending on state variable?
            Asked 2021-Jun-14 at 18:35

            I am writing a camera app. So when the user goes to the camera page they are provided with the option to grant camera permissions or not. I am saving their decision in variable const [hasPermission, setHasPermission] = useState(null); My current use effect function:

            ...

            ANSWER

            Answered 2021-Jun-14 at 18:35

            You only need to pass the variable that matters. No need to check anything else.

            Source https://stackoverflow.com/questions/67975493

            QUESTION

            Async loop on a new thread in rust: the trait `std::future::Future` is not implemented for `()`
            Asked 2021-Jun-14 at 17:28

            I know this question has been asked many times, but I still can't figure out what to do (more below).

            I'm trying to spawn a new thread using std::thread::spawn and then run an async loop inside of it.

            The async function I want to run:

            ...

            ANSWER

            Answered 2021-Jun-14 at 17:28

            #[tokio::main] converts your function into the following:

            Source https://stackoverflow.com/questions/67966950

            QUESTION

            Is there a metric to quantify the perspectiveness in two images?
            Asked 2021-Jun-14 at 16:59

            I am coding a program in OpenCV where I want to adjust camera position. I would like to know if there is any metric in OpenCV to measure the amount of perspectiveness in two images. How can homography be used to quantify the degree of perspectiveness in two images as follows. The method that comes to my mind is to run edge detection and compare the parallel edge sizes but that method is prone to errors.

            ...

            ANSWER

            Answered 2021-Jun-14 at 16:59

            As a first solution I'd recommend maximizing the distance between the image of the line at infinity and the center of your picture.

            Identify at least two pairs of lines that are parallel in the original image. Intersect the lines of each pair and connect the resulting points. Best do all of this in homogeneous coordinates so you won't have to worry about lines being still parallel in the transformed version. Compute the distance between the center of the image and that line, possibly taking the resolution of the image into account somehow to make the result invariant to resampling. The result will be infinity for an image obtained from a pure affine transformation. So the larger that value the closer you are to the affine scenario.

            Source https://stackoverflow.com/questions/67963004

            QUESTION

            Specifying a concept for an object with a member function that returns a constrained value
            Asked 2021-Jun-14 at 14:21

            I am trying to wrap my mind around C++ 20 concept and constraint by porting some of my old code.

            ...

            ANSWER

            Answered 2021-Jun-13 at 19:33

            A concept is not a type, so it can’t appear as a container element type—neither in the type of an object (this is why you have to use std::vector to approximate std::vector) nor in the type for your concept ContainerOf. Moreover, you can’t use a concept as a template argument, so you can’t have a higher-order ContainerLike concept.

            What you can do is make a Container concept that checks only for empty, add the constraint

            Source https://stackoverflow.com/questions/67958748

            QUESTION

            postgreSQL does this help improve performance?
            Asked 2021-Jun-14 at 11:00

            Lets say i have a social media app where users can post and for each post i'm inserting a row to the posts table, and updating the user_affiliates table.

            Now lets say that the user wants to see all of his/her posts what's the most efficient way to select posts that the user has posted?

            This is a simplified version of my database:

            ...

            ANSWER

            Answered 2021-Jun-14 at 10:57

            You have a user_id on the posts table, so why not just use that?

            Source https://stackoverflow.com/questions/67968961

            QUESTION

            NodeJs setTimeout for each game or one setInterval that loop each game
            Asked 2021-Jun-14 at 00:03

            I'm trying to make a server for a role-based browser game, so what I did so far:

            Once 2 players join the server, a room is created, then it starts its own timeout of let's say 10 seconds, once the timeout is done, it changes its state and reruns the timeout.

            I'm afraid if I have many rooms that may impact the performance, so an idea came to my mind which is, create a setInterval that tick every second, and loop through all rooms to call an update, inside the room once update called, it will check last time it updated its state vs current time, if 10 seconds passed, it updates to the new start.

            I'm afraid that with setInterval every second may be worse than the first idea, or the opposite?

            ...

            ANSWER

            Answered 2021-Jun-14 at 00:03

            It would be far more efficient to let each room have its own timer than to have one frequent setInterval() that has to loop through all the rooms.

            Timers in nodejs are super efficient and can easily scale to zillions of timers. They are stored in a sorted linked list and only the head of the linked list is compared vs the current time in the event loop. All the rest of the timers in the linked list have no regular cost - they just sit in the linked list until they are finally at the head of the list. There is slightly more cost to adding a new sorted timer when the linked list is long, but that's probably better than having a single interval that spends a lot of time looping through rooms that haven't reached their timeout. The nodejs timer system is just a more efficient way to do that.

            Source https://stackoverflow.com/questions/67963386

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

            Vulnerabilities

            No vulnerabilities reported

            Install mind

            You need [cargo to install mind](https://www.rust-lang.org/tools/install).

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