racer | Realtime model synchronization engine for Node.js | Socket library

by derbyjs JavaScript Version: 2.1.1 License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | racer Summary

racer is a JavaScript library typically used in Institutions, Learning, Administration, Public Services, Networking, Socket, Nodejs applications. racer has no bugs, it has no vulnerabilities and it has medium support. You can install using 'npm i @derbyjs/racer' or download it from GitHub, npm.

Racer is a realtime model synchronization engine for Node.js. By leveraging ShareDB, multiple users can interact with the same data in realtime via Operational Transformation, a sophisticated conflict resolution algorithm that works in realtime and with offline clients. ShareDB also supports PubSub across multiple servers for horizontal scaling. Clients can express data subscriptions and fetches in terms of queries and specific documents, so different clients can be subscribed to different overlapping sets of data. On top of this sophisticated backend, Racer provides a simple model and event interface for writing application logic.

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Quality

Security

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Support

racer has a medium active ecosystem.

It has 1157 star(s) with 117 fork(s). There are 48 watchers for this library.

There were 3 major release(s) in the last 6 months.

There are 36 open issues and 128 have been closed. On average issues are closed in 187 days. There are 7 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of racer is 2.1.1

Quality

racer has 0 bugs and 0 code smells.

Security

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

racer code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

racer 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.

Reuse

racer releases are available to install and integrate.

Deployable package is available in npm.

Installation instructions, examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi has reviewed racer and discovered the below as its top functions. This is intended to give you an instant insight into racer implemented functionality, and help decide if they suit your requirements.

Handle Change operations .
Finish the bundle
patch change event handler
Listener for listeners .
Patch index .
patch change event .
Wrap callback in model
Subscribe to a query
Only called once per model .
Asynchronously adds a group to the queue .

Get all kandi verified functions for this library.

racer Key Features

No Key Features are available at this moment for racer.

racer Examples and Code Snippets

No Code Snippets are available at this moment for racer.

Community Discussions

Trending Discussions on racer

How to insert string values into a empty created py-spark data frame?

Convert speed to mph (Flutter)

Pygame mask collision. Using a transparent image as background not working

overwriting a specific line in a txt file

Hide a div unless I choose a category

Reference to method with .apply

How do you calculate means for time differences for groups in R?

How can I display data from object in angular app?

Nette Database: No reference found for Join query

Exclude specific cells from being included in a formula's calculation, even if said cells are referenced by the formula

QUESTION

How to insert string values into a empty created py-spark data frame?

Asked 2021-May-27 at 13:30

I want to create a empty spark data frame and add data into it, when I try doing as below I am getting an error:-

...

ANSWER

Answered 2021-May-27 at 13:30

A column should only have one type. If you can't guarantee that it is better to create the dataframe with a schema passed.

You can create a dataframe like this,

Source https://stackoverflow.com/questions/67720593

QUESTION

Convert speed to mph (Flutter)

Asked 2021-May-18 at 20:44

My default speed records to Firestore as Meters Per Second and I need Miles Per Hour. I understand I can multiply by 2.23694 and this will be the equivalent conversion but I do not understand how to add this to my code. How do I change the speed from meters per second to miles per hour? Thanks for reading and any suggestions.

...

ANSWER

Answered 2021-May-18 at 20:41

Change this:

Source https://stackoverflow.com/questions/67593339

QUESTION

Pygame mask collision. Using a transparent image as background not working

Asked 2021-May-16 at 19:17

I'm having trouble trying to understand why i cant get the mask collision to work. I'm trying to use a background image(Racetrack class) that has transparent areas the car object can 'drive' in. However i cant seem to get it to work. Collide function will only return none once the car has moved outside off the background image area. I've also tried placing the sprites into groups, but i couldn't get that to work either.

...

ANSWER

Answered 2021-May-16 at 19:17

I can see 3 problems:

The position of the car is self.pos * 32 - (self.rect.width / 2, self.rect.height / 2). This is the position where the car is "blit":

Source https://stackoverflow.com/questions/67560266

QUESTION

overwriting a specific line in a txt file

Asked 2021-Apr-27 at 09:59

i am still new to python, i have tried this way to overwrite a line on a txt file

'''

answer =input("R/S/L/M:")

...

ANSWER

Answered 2021-Apr-25 at 14:02

You could do this:

Source https://stackoverflow.com/questions/67253204

QUESTION

Hide a div unless I choose a category

Asked 2021-Apr-18 at 16:32

I made a category filter div (block_container) which shows everything in the div by default, the thing is that I want this div to be hidden unless I click on a category.

In other words, I want to add the ".hide" class to the ".block_container" div as long as I don't choose a category from the "container" div.

Category selector div:

...

ANSWER

Answered 2021-Apr-18 at 16:26

You just have to add the class hide in the div.gameCard-tags. The rest works as expected:

Source https://stackoverflow.com/questions/67150551

QUESTION

Reference to method with .apply

Asked 2021-Apr-14 at 08:26

I have a List called "racers" of simple class

...

ANSWER

Answered 2021-Apr-13 at 19:52

You can do it by breaking mapToInt(racer->getter.apply(racer).length()) into two steps:

Source https://stackoverflow.com/questions/67080349

QUESTION

How do you calculate means for time differences for groups in R?

Asked 2021-Apr-11 at 00:48

I am trying to calculate the mean time for national sailing teams in a competition.

I want to group the teams together by country to calculate the mean sailing time for USA and Japan.

Here's my code, which uses the dplyr function's group_by.

Here's the data

...

ANSWER

Answered 2021-Apr-11 at 00:48

I hope this is what you are looking for:

Source https://stackoverflow.com/questions/67040477

QUESTION

How can I display data from object in angular app?

Asked 2021-Mar-13 at 13:25

I have an issue with displaying data from API response. The data that I receive are objects in the object. I tried to display data by JSON.striginfy but the data isn't clear.

This data I receive from api:

JSON:

...

ANSWER

Answered 2021-Mar-12 at 18:01

You may do so using the following code on the template by using the keyvalue pipe:

Source https://stackoverflow.com/questions/66604421

QUESTION

Nette Database: No reference found for Join query

Asked 2021-Feb-26 at 19:12

How do you create a query in the renderDefault function with JOINS? I have been looking at nette docs for a while and I can't seem to find my answer. That's why I wanted to ask someone experienced. Who could already know the answer?

** Let's say you got this query**

...

ANSWER

Answered 2021-Feb-26 at 19:12

If you want to use the simpler database explorer API over regular SQL queries through the core API, you will need to set up foreign keys in the database properly.

The explorer API will allow you to work with the table directly, inferring which columns to select and which tables to use automatically:

Source https://stackoverflow.com/questions/66390514

QUESTION

Exclude specific cells from being included in a formula's calculation, even if said cells are referenced by the formula

Asked 2021-Feb-24 at 08:37

I maintain a spreadsheet for a virtual racing competition. Within it, I have to log the times of each racer and how many points they have earned. I do so by importing a .csv file for each race (the import takes place on a secondary document, which is linked to the main one via DGET if that matters).

Screenshot of a spreadsheet page

In Column G, I calculate the total time for all races, via basic addition: =C5+E5, =C6+E6 etc.

But sometimes racers crash, which automatically replaces their time (HH:MM:SS.MsMs) in the .csv file, with a percentage value (%) denoting how far they got when they crashed. This causes the addition formula to spit out a wildly inaccurate result, as the software does its best to add a time value and a percentage value which represent a distance together.

Can I write a formula which only adds together the cells which have the proper time format?

So, for example, I set X99, Y99, and Z99, to be added together, but if Y99 contains a percentage value, it is excluded from the calculation, and the final output is the value of X99+Z99

...

ANSWER

Answered 2021-Feb-24 at 08:37

Something like this?

Source https://stackoverflow.com/questions/66334441

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

Vulnerabilities

No vulnerabilities reported

Install racer

Racer requires Node v0.10. You will also need to have a MongoDB and a Redis server running on your machine. The examples will connect via the default configurations.

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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