busy | BIGNUM BAKEOFF was a while ago , but people still ask

by rcls C++ Version: Current License: Non-SPDX

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kandi X-RAY | busy Summary

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

This implements a parser, type-checker, interpreter and proof-search for the Huet-Coquand "Calculus of Constructions" (CoC). See Barendregts "Lambda Calculi with Types" (Handbook of Logic in Computer Science, Volumes 1) for an intro to this system and further references.

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Support

busy has a low active ecosystem.

It has 18 star(s) with 1 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

busy has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of busy is current.

Quality

busy has no bugs reported.

Security

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

License

busy 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.

Reuse

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

Installation instructions are not available. Examples and code snippets are available.

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busy Key Features

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busy Examples and Code Snippets

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Community Discussions

Trending Discussions on busy

Consumer Provider doesn't seem to notify listeners?

Remove the Last Vowel in Python

Ebay Scraper, missing date for first line and then evey loop

Are there performance differences between await Task.Delay() and Task.Delay().Wait() in a separate Task?

How to load 2 or more entity from OData before View is loaded

How can I await until I receive a callback/notification without busy-waiting?

JOLT to split JSON into smaller parts - update 2021/06/08

Selenium Can't find "HOME" element on Facebook

Are WPF DataBindings not refreshed on Dispatcher.Yied()?

GeneratedPluginRegistrant.h:8:9: 'Flutter/Flutter.h' file not found

QUESTION

Consumer Provider doesn't seem to notify listeners?

Asked 2021-Jun-15 at 17:51

The minimal reproducible code below aims to have a loading icon when a button is pressed(to simulate loading when asynchronous computation happen).

For some reason, the Consumer Provider doesn't rebuild the widget when during the callback.

My view:

...

ANSWER

Answered 2021-Jun-15 at 17:51

did you try to await the future? 🤔

Source https://stackoverflow.com/questions/67991042

QUESTION

Remove the Last Vowel in Python

Asked 2021-Jun-14 at 22:49

I have the following problem and I am wondering if there is a faster and cleaner implementation of the removeLastChar() function. Specifically, if one can already remove the last vowel without having to find the corresponding index first.

PROBLEM

Write a function that removes the last vowel in each word in a sentence.

Examples:

removeLastVowel("Those who dare to fail miserably can achieve greatly.")

"Thos wh dar t fal miserbly cn achiev gretly."

removeLastVowel("Love is a serious mental disease.")

"Lov s serios mentl diseas"

removeLastVowel("Get busy living or get busy dying.")

"Gt bsy livng r gt bsy dyng"

Notes: Vowels are: a, e, i, o, u (both upper and lowercase).

MY SOLUTION

A PSEUDOCODE

Decompose the sentence
For each word find the index of the last vowel
Then remove it and make the new "word"
Concatenate all the words

CODE

...

ANSWER

Answered 2021-Jun-14 at 22:49

This can be more easily achieved with a regex substitution that removes a vowel that's followed by zero or more consonants up to a word boundary:

Source https://stackoverflow.com/questions/67977916

QUESTION

Ebay Scraper, missing date for first line and then evey loop

Asked 2021-Jun-14 at 19:47

I am having issues with my eBAY Scraper and can not work out why. Although it is pulling the data off fine, it misses SOME of the data OFF for the first row and then for each first row of every Loop and therefore the data is not in the correct row.

Q) Why is it missing the data at the start and then for each loop?

I think It may have something to do with the title extracting slower that the rest of the items, however I can not work it out as I am very limited with vba. I have attached a demo, for your viewing.

I am not looking for a full rewite of the code, just pointing in the right direction or a SLIGHT change to MY code. As I stated I and very limited in vba, I can understand my code, anything more advanced will be out of my depth.

Demo Download - Download Excel File

WebSite - Ebay.co.uk

Ebay Product Page - Prodcts Shown may vary browser to browser

I have colour coded it so you can see better

This is what it is doing

When It Should be This

For some reason it misses out Price, Condition, Former Price & Discount for the first item on start and EVERY Loop. For every loop that it misses the items out the Price, Condition, Former Price & Discount become MORE out of line

1st Loop - Items are NOW 2 rows out of line

2nd Loop - Items are NOW 3 rows out of line

As I searched 3 pages (2 pages + 1 extra) and it looped 3 time it has missed the first row on each loop. I am 3 rows out. I think this may have too do with the Title of the item as it extracts a bit slower then the rest of the items

End Of Extraction

This is my code

...

ANSWER

Answered 2021-Jun-14 at 19:47

Make sure to skip the first element within your returned collection. Keeping to your code.

Source https://stackoverflow.com/questions/67969454

QUESTION

Are there performance differences between await Task.Delay() and Task.Delay().Wait() in a separate Task?

Asked 2021-Jun-14 at 13:43

I have a construct like this:

...

ANSWER

Answered 2021-Jun-14 at 13:43

There are concrete efficiency losses because of the inefficient use of threads. Each thread requires at least 1 MB for its stack, so the more threads that are created in order to do nothing, the more memory is allocated for unproductive purposes.

It is also possible for concrete performance losses to appear, in case the demand for threads surpasses the ThreadPool availability. In this case the ThreadPool becomes saturated, and new threads are injected in the pool in a conservative (slow) rate. So the tasks you create and Start will not start immediately, but instead they will be entered in an internal queue, waiting for a free thread, either one that completed some previous work, or an new injected one.

Regarding your concerns about creating busy waiting procedures, no, that's not what happening. A sleeping thread does not consume CPU resources.

As a side note, creating cold Tasks using the Task constructor is an advanced technique that's only used in special occasions. The common way of creating delegate-based tasks is through the convenient Task.Run method, that returns hot (already started) tasks.

Source https://stackoverflow.com/questions/67969696

QUESTION

How to load 2 or more entity from OData before View is loaded

Asked 2021-Jun-14 at 07:56

I am developing a Master-Detail App.

I have 1 EntityType for Master View (Master) and another EntityType for Detail (Detail). I have created an Association from Master to Detail.

Master View works perfectly. Detail has 2 parts:

Header: which shows a few fields from the Line selected in Master view. (Name, ID and not much more)
Body: it has 2 fragments. These 2 fragments displays the info from Detail Entity.

My Issue is:

I got errors in the Console cause fields loaded on Fragments are searched from the Entity type Master. It means that the View && Fragments are loaded before the second Binding is done.

What I have tried:

I used the BusyIndicator and controlling the events (attachRequestComplete and/or attachEventOnce("dataReceived")) from the Model in the onInit() assigning view.setBusy(false) when they are reached. It doesn't work for me.
I tried it out but when the Event of the 2nd binding is reached the view is already loaded.

After loading the info in Master View:

...

ANSWER

Answered 2021-Jun-14 at 07:56

It looks like your code binds relative the path "Master2Detail" on the detail side. BUT initially there should not be any existing binding in any parent view.

Your app should look more or less like this for binding path. UI5 is moving up the element to find data:

App-> Flexible ColumnLayout/SPlitView -> Master

App-> Flexible ColumnLayout/SPlitView -> Details

So adjust your bindings a described here OData error when bind to an element in a Master-Detail app

Second, you get this error because initially there is no relative binding in between your master bound element and the detail. Therefore, UI5 can only think this must be part of the master.

If you make up a relative binding in-between, you must inject the fragment by yourself. E.g. load the fragment, bind the loaded control(in aour case the VBox) and then use addItem etc. do attache it to the view.

Source https://stackoverflow.com/questions/67937118

QUESTION

How can I await until I receive a callback/notification without busy-waiting?

Asked 2021-Jun-14 at 06:22

I understand how I can await on library code to wait for a network request or other long-running action to complete, but how can I await on my own long-running action without busy waiting?

This is the busy-waiting solution. How can I make it event-driven?

...

ANSWER

Answered 2021-May-19 at 22:46

Generally in concurrency a "future" is placeholder for a return value and it has an associated "promise" that is fulfilled to pass the final return value.

In C#, they have different names: the future is a Task and the promise is a TaskCompletionSource.

You can create a promise, await on it, and then fulfill it when you get your callback:

Source https://stackoverflow.com/questions/67611867

QUESTION

JOLT to split JSON into smaller parts - update 2021/06/08

Asked 2021-Jun-13 at 20:38

I'm getting some data in Nifi that collects JSON but the table that it needs to be inserted in has a different format.

I'm having trouble to deconstruct a JSON structure into smaller pieces - getting stuck with the second what seems like a two or three-part shift. Any ideas to get me to the next step?

Original JSON:

...

ANSWER

Answered 2021-Jun-13 at 20:38

 [
      {
        "operation": "shift",
        "spec": {
          "*": {
            "timestamp": "[&1].timestamp",
            "inverterId": "[&1].inverterId",
            "systemKey": "[&1].systemKey",
            "I_DC*_*": "[&1].&"
          }
        }
      }, {
        "operation": "shift",
        "spec": {
          "*": {
            "timestamp": "[&1].timestamp",
            "inverterId": "[&1].inverterId",
            "systemKey": "[&1].systemKey",
            "*": "[&1].keysToPivot.&"
          }
        }
      },
      {
        "operation": "shift",
        "spec": {
          "*": {
            "keysToPivot": {
              "*": {
                "$": "[&3].[#2].stringId",
                "@": "[&3].[#2].value",
                "@(2,timestamp)": "[&3].[#2].timestamp",
                "@(2,inverterId)": "[&3].[#2].inverterId",
                "@(2,systemKey)": "[&3].[#2].systemKey"
              }
            }
          }
        }
      }
    ]

Source https://stackoverflow.com/questions/67838744

QUESTION

Selenium Can't find "HOME" element on Facebook

Asked 2021-Jun-12 at 01:32

I'm doing some exercises with selenium, trying to scrape a few pages on facebook. However, I'm not able to find the "Home" button link element to keep going. This on the left menu in any user's profile.

From what I'm seeing in the page code, the link is here:

...

ANSWER

Answered 2021-Jun-11 at 15:24

The element you are trying to click has a span tag, not a. Try the following:

Source https://stackoverflow.com/questions/67939587

QUESTION

Are WPF DataBindings not refreshed on Dispatcher.Yied()?

Asked 2021-Jun-11 at 09:47

So, I have this big application that does some long work on the UI Thread. I know it's bad design, but this can't be changed. Thake it as a constraint.

To show the progress of the work, I want to show a WPF dialog with a progressbar. The dialog is using DataBindings to DependencyProperties for its labels and the progressbar.

When I first called Show() on the dialog instance, the dialog wouldn't be displayed, because the Dispatcher is busy working on the long running task. So I called Dispatcher.Yield() after Show(). I also call Yield() after each update of the DependencyProperty of the progressbar. The dialog windows is showing up, but it's still very empty. The DataBindings are not updated on Dispatcher.Yield().

Is there any chance I can get them to update while the Dispatcher is busy?

Example App

Create a new .NET Framework WPF App, name it 'BusyProgress' and change these files.

MainWindow.xaml ...

ANSWER

Answered 2021-Jun-11 at 09:47

Building the example helped to realize that this answer was in fact enough.
My app had another constraint that I didn't realize before. The Dispatcher was disabled -.-... Thank you sintar for your help!

Source https://stackoverflow.com/questions/67932776

QUESTION

GeneratedPluginRegistrant.h:8:9: 'Flutter/Flutter.h' file not found

Asked 2021-Jun-10 at 12:33

when I compile my flutter(version 2.0.1) project using this command in macOS Catalina 10.15.7 in GitHub Actions(today I found in my local macOS machine have the same issue and struggle for days):

...

ANSWER

Answered 2021-Jun-10 at 12:33

I tried everything I could do, but I ended up re-creating ios directory.

My 2 projects had the same settings, but only 1 project made this issue.

Anyway, this is what I did finally.

Source https://stackoverflow.com/questions/66549471

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

Vulnerabilities

No vulnerabilities reported

Install busy

You can download it from GitHub.

Support

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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