future | std : :future extension

by purecpp-org C++ Version: Current License: MIT

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kandi X-RAY | future Summary

future is a C++ library typically used in Server applications. future has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

a std::future extension implemented in c++11.

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Support

future has a low active ecosystem.

It has 20 star(s) with 6 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 2 have been closed. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of future is current.

Quality

future has no bugs reported.

Security

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

License

future is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

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

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future Key Features

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future Examples and Code Snippets

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Community Discussions

Trending Discussions on future

How to publish two messages of the same type to different worker instances based on the message content without using Send and RequestAddress?

Parallelize histogram creation in c++ with futures: how to use a template function with future?

Rust futures / async - await strange behavior

Multiple requests causing program to crash (using BeautifulSoup)

How to reduce the lines of code with multi variable equations?

Lifetime of async closure return type

Consumer Provider doesn't seem to notify listeners?

MongoDB error when inserting values with contain `.`

How to transpose axes back after .transpose?

How can add a Row dynamically in flutter?

QUESTION

How to publish two messages of the same type to different worker instances based on the message content without using Send and RequestAddress?

Asked 2021-Jun-16 at 03:47

How to publish two messages of the same type to different worker instances based on the message content without using Send and RequestAddress?

My scenario is:

I am using Azure ServiceBus and Azure StorageTables.

I am running two different instances of the same worker service workera and workerb. I need workera and workerb to both consume messages of type Command based on the value of Command.WorkerPrefix.

the Command type looks like:

...

ANSWER

Answered 2021-Jun-15 at 23:37

Using MassTransit with Azure Service Bus, I would suggest taking the message routing burden away from the publisher, and moving it to the consumer. By configuring the receive endpoint and using a subscription filter each instance would add its own subscription and use a message header to filter published messages.

On the publisher, a message header would be added:

Source https://stackoverflow.com/questions/67993639

QUESTION

Parallelize histogram creation in c++ with futures: how to use a template function with future?

Asked 2021-Jun-16 at 00:46

Giving a bit of context. I'm using c++17. I'm using pointer T* data because this will interop with cuda code. I'm trying write a parallel version (on CPU) of a histogram creator. The sequential version:

...

ANSWER

Answered 2021-Jun-16 at 00:46

The issue you are having has nothing to do with templates. You cannot invoke std::async() on a member function without binding it to an instance. Wrapping the call in a lambda does the trick.

Here's an example:

Source https://stackoverflow.com/questions/67994778

QUESTION

Rust futures / async - await strange behavior

Asked 2021-Jun-15 at 20:06

I am new to rust and I was reading up on using futures and async / await in rust, and built a simple tcp server using it. I then decided to write a quick benchmark, by sending requests to the server at a constant rate, but I am having some strange issues.

The below code should send a request every 0.001 seconds, and it does, except the program reports strange run times. This is the output:

...

ANSWER

Answered 2021-Jun-15 at 20:06

You are not measuring the elapsed time correctly:

total_send_time measures the duration of the spawn() call, but as the actual task is executed asynchronously, start_in.elapsed() does not give you any information about how much time the task actually takes.
The ran in time, as measured by start.elapsed() is also not useful at all. As you are using blocking sleep operation, you are just measuring how much time your app has spent in the std::thread::sleep()
Last but not least, your time_to_sleep calculation is completely incorrect, because of the issue mentioned in point 1.

Source https://stackoverflow.com/questions/67990757

QUESTION

Multiple requests causing program to crash (using BeautifulSoup)

Asked 2021-Jun-15 at 19:45

I am writing a program in python to have a user input multiple websites then request and scrape those websites for their titles and output it. However, when the program surpasses 8 websites the program crashes every time. I am not sure if it is a memory problem, but I have been looking all over and can't find any one who has had the same problem. The code is below (I added 9 lists so all you have to do is copy and paste the code to see the issue).

...

ANSWER

Answered 2021-Jun-15 at 19:45

To avoid the page from crashing, add the user-agent header to the headers= parameter in requests.get(), otherwise, the page thinks that your a bot and will block you.

Source https://stackoverflow.com/questions/67992444

QUESTION

How to reduce the lines of code with multi variable equations?

Asked 2021-Jun-15 at 19:41

I am trying to reduce lines of code because I realized that I am repeating the same equations every time. I am programming a contour map and putting several sources of intensity into it. Until now I put 3 sources, but in the future I want to put more, and that will increase the lines a lot. So I want to see if it is possible to reduce the lines of "source positions" and "Intensity equations". As you can see the last equation is a logaritmic summation of z1, z2 and z3, is it possible to reduce that, any idea?

...

ANSWER

Answered 2021-Jun-15 at 15:45

You could iterate over certain parts in a loop.

I tried to keep the same format overall and just rearranged the code to show how you might do it.

Source https://stackoverflow.com/questions/67989343

QUESTION

Lifetime of async closure return type

Asked 2021-Jun-15 at 18:22

Consider the following code:

...

ANSWER

Answered 2021-Jun-15 at 18:22

i think you are looking for this:

Source https://stackoverflow.com/questions/67991159

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

MongoDB error when inserting values with contain `.`

Asked 2021-Jun-15 at 17:13

{'question1.': 'no', 'question2.': 'no.'}
Future exception was never retrieved
future:

...

ANSWER

Answered 2021-Jun-15 at 17:13

Short answer: You can't.

It was possible in MongoDB version <= 3.6 where there was an option to bypass the validation completely using the check_keys=False option. But this option is deprecated ever since.

Although MongoDB has bypass_document_validation=True in newer versions, it won't bypass the . character for obvious reasons.

There is an open issue regarding this on JIRA (SERVER-30575) and it is still open. Also, the PyMongo specific issue related to this was raised once PYTHON-1522.

So until the SERVER-30575 issue fixed, you have no other choice.

I would suggest you rearrange your schema design to embed the key name as a value to a different key.

Something like this:

Source https://stackoverflow.com/questions/67989699

QUESTION

How to transpose axes back after .transpose?

Asked 2021-Jun-15 at 15:47

I'm wonder how can I undo my transpose operation. Let me be more specific in example:

...

ANSWER

Answered 2021-Jun-15 at 15:47

Using transpose, just follow the order. Your first permutation mapped dimensions as:

Source https://stackoverflow.com/questions/67938346

QUESTION

How can add a Row dynamically in flutter?

Asked 2021-Jun-15 at 14:50

My problem is that, I have a List of Icons(CustomWidgets) what are provide by an API. I need put this icons in my App but when the are 7 or more its looks like these:

I want to put the icons in separate rows. I've tried out a method which split the list in 2 and add it dynamically but didn't print anything because I'm using a FutureBuilder to print the Icons.

Here is the code:

...

ANSWER

Answered 2021-Apr-16 at 01:34

What I suggest is to use Wrap instead of Row in your case, widget will place in the 2nd row is not enough space

THERE IS THE WAY TO DO IT:

Source https://stackoverflow.com/questions/67090820

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Vulnerabilities

No vulnerabilities reported

Install future

You can download it from GitHub.

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