flatdata | Write-once , read-many , minimal overhead binary | Serialization library

by heremaps Python Version: Current License: Apache-2.0

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

kandi X-RAY | flatdata Summary

flatdata is a Python library typically used in Utilities, Serialization applications. flatdata has no vulnerabilities, it has a Permissive License and it has low support. However flatdata has 2 bugs and it build file is not available. You can install using 'pip install flatdata' or download it from GitHub, PyPI.

Flatdata is a library providing data structures for convenient creation, storage and access of packed memory-mappable structures with minimal overhead. With flatdata, the user defines a schema of the data format using a very simple schema language that supports plain structs, vectors and multivectors. The schema is then used to generate builders and readers for serialization and deserialization of the data to an archive of files on disk. The data is serialized in a portable way which allows zero-overhead random access to it by using memory mapped storage: the operating system facilities are used for loading, caching and paging of the data, and most important, accessing it as if it were in memory.

Support

Quality

Security

License

Reuse

Support

flatdata has a low active ecosystem.

It has 163 star(s) with 27 fork(s). There are 19 watchers for this library.

It had no major release in the last 6 months.

There are 22 open issues and 50 have been closed. On average issues are closed in 248 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of flatdata is current.

Quality

flatdata has 2 bugs (0 blocker, 0 critical, 2 major, 0 minor) and 156 code smells.

Security

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

flatdata code analysis shows 0 unresolved vulnerabilities.

There are 4 security hotspots that need review.

License

flatdata is licensed under the Apache-2.0 License. This license is Permissive.

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

Reuse

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

Deployable package is available in PyPI.

flatdata has no build file. You will be need to create the build yourself to build the component from source.

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

It has 10810 lines of code, 630 functions and 129 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

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flatdata Key Features

No Key Features are available at this moment for flatdata.

flatdata Examples and Code Snippets

No Code Snippets are available at this moment for flatdata.

Community Discussions

Trending Discussions on flatdata

How to group and sort object array based on string index

Whole page reloading after changing one state

ReactJS - Charts from ChartJS re-rendering after first page load

NestJs: Make sure your class is decorated with an appropriate decorator

d3 Dendrogram: Replacing root retains old tree

Azure Databricks : Save file in Azure Datalake directory folder

Sort array of objects by nested object property

dc.js: dynamically multiple dimensions

How to pass back param to parent screen on BackHandler in react-native?

JavaScript Finding/Comparing and updating duplicate elements of metric/multi dimension array

QUESTION

How to group and sort object array based on string index

Asked 2022-Mar-10 at 13:13

I want to group & re-arrange my flat array into an array of objects where each object contains its direct descendent in its children's properties.

My input Data -:

...

ANSWER

Answered 2022-Mar-10 at 13:13

You could first sort the data using a "natural" sort. JavaScript localeCompare has an option for that.

Then create a Map keyed by lineNo and with as corresponding values the objects with the same lineNo property and an empty children array property.

Then iterate the data again to populate those children arrays.

Extract the Map values and remove those objects that have an empty children array, unless they are top-level nodes (a boundary case).

Here is an implementation:

Source https://stackoverflow.com/questions/71421524

QUESTION

Whole page reloading after changing one state

Asked 2021-Aug-03 at 00:18

I'm currently building a page with a ton of Charts, and I'm using a Material UI menu to kinda switch around graphs.
When I click on a new MenuItem it changes my part state and displays a new array of components.
My main problem right now is that whenever I click on the button, all the charts do a quick load, but with this amount of charts this is a problem. I've tried debugging it, but to be honest I couldn't find a problem, all my states are set when they need to be set, and useEffects are running just once on the beginning, so no extra loads.
This is what it looks like:

And this would be the code that I'm currently rendering. If you need any further info from my code just let me know and if you can provide any advice for the improvement of my code I would be glad, thanks.

...

ANSWER

Answered 2021-Aug-03 at 00:18

Something on your page is causing the page to rerender again after load, which would be either a state change or most likely the useEffect.

If you are using useEffect make sure you're doing it correctly by 1. not updating state inside it or 2. returning '[]'.

Source https://stackoverflow.com/questions/68627018

QUESTION

ReactJS - Charts from ChartJS re-rendering after first page load

Asked 2021-Jul-24 at 18:13

I'm currently on a project that the use of charts is needed, so I opted for chartsjs, but I'm facing a small problem that have two parts.

When the page first loads my data is not being shown, and some graphs/data appear as undefined (I know that how it should work when I set some object like this “obj?.smt”), and I don't know if there's a way to mask it until the loading is done.
As you can see on the GIF whenever there's a reload on the page the graphs kinda flicker, and it kinda worries me, this page is going to have at least 50 graphs (not my idea), so if it's flickering does it mean that it's rendering 2 times? Or even more under the hood?

...

ANSWER

Answered 2021-Jul-24 at 18:13

You can put console.log or console.count to see how it executed.

My guess is that flatData called twice, when value of estimatedProducts changes and when value of estimatedMonths changes. If values come from there so first component doesn't have data, after one API call finished it set one state and update, on second API call it updates again.

You can combine 2 API calls in 1 function and set state 1 time.

Or put condition in useEffect

Source https://stackoverflow.com/questions/68512465

QUESTION

NestJs: Make sure your class is decorated with an appropriate decorator

Asked 2021-Feb-17 at 04:23

I am using graphql-request as a GraphQL client to query a headless CMS to fetch stuff, modify and return to the original request/query. headless cms is hosted separately fyi.

I have the following code :

...

ANSWER

Answered 2021-Feb-16 at 19:27

How is your graphql server supposed to understand the type of FlatDataType when there's no information about it being passed to the graphql parser? You need to add the graphql decorators to it as well. @ObjectType(), @Field(), etc.

Source https://stackoverflow.com/questions/66225288

QUESTION

d3 Dendrogram: Replacing root retains old tree

Asked 2021-Jan-23 at 15:41

I have a Dendrogram / cluster diagram's root using d3.hierarchy. I'm trying to update the root with a selected node which should become the new head, with a new tree drawn with that node at the top. This should replace the old tree. The steps are as follows:

read in flat data
convert to hierarchy using d3.stratify
convert this to a cluster (with coordinates etc)
draw using new select.join (which no longer needs explicit exit / remove)
user clicks on a node's circle
update hierarchy with selected node as the new root with parents removed
re-draw, with nodes no longer present in the data (the parent and upwards) removed by join

However, it re-draws the new, smaller root and dependents but all of the old SVG is still there. I've tried explicitly adding exit/ remove but that doesn't help.

What am I doing wrong?

A simplified, reproducible example can be see here. I've also created a fiddle at https://jsfiddle.net/colourblue/zp7ujra3/9/

...

ANSWER

Answered 2021-Jan-23 at 15:41

Here's a much more complicated example which properly handles the enter, update, and exit pattern with the newish .join method. This does allow you to add transitions. Note, I removed your inner-wrapper g nodes. Since every click appended a new one this messes up selections of your visible nodes (the paths, circles and text).

Source https://stackoverflow.com/questions/65797801

QUESTION

Azure Databricks : Save file in Azure Datalake directory folder

Asked 2021-Jan-07 at 01:12

I would like to save file in my azure datalake gen2 directory by it is not working.

When I save the file without directory it works but with Directory "Data" it is not working.

Here is the code :

...

ANSWER

Answered 2021-Jan-07 at 01:12

Reference to the documentation. I've created a test to upload local file to a folder of my Azure data lake.
This is my local project file structure:

The file was uploaded to the folder of my Azure data lake.

This is my python code

Source https://stackoverflow.com/questions/65592146

QUESTION

Sort array of objects by nested object property

Asked 2020-Nov-26 at 14:20

I have an array of objects like so:

...

ANSWER

Answered 2020-Nov-26 at 14:20

This can be done using Array.prototype.sort function.

Inside sort function, compare the values using String.localeCompare function.

Source https://stackoverflow.com/questions/65023793

QUESTION

dc.js: dynamically multiple dimensions

Asked 2020-Nov-05 at 15:01

I want to create as many dimensions as I got datasets in the array. The dataset amount is variable. In my example i have 3 but it can be more or less.

My data:

...

ANSWER

Answered 2020-Nov-05 at 15:01

I added an easier solution to the entry in the FAQ.

Array.forEach is often a good solution, because the value for the current iteration of the loop will be captured in a local variable which won't change:

Source https://stackoverflow.com/questions/64688322

QUESTION

How to pass back param to parent screen on BackHandler in react-native?

Asked 2020-Oct-05 at 07:51

"react": "16.13.1",
"react-native": "0.63.2",
"@react-navigation/bottom-tabs": "^5.7.3",
"@react-navigation/compat": "^5.2.5",
"@react-navigation/material-bottom-tabs": "^5.2.15",
"@react-navigation/material-top-tabs": "^5.2.15",
"@react-navigation/native": "^5.7.3",
"@react-navigation/stack": "^5.9.0",

...

ANSWER

Answered 2020-Oct-05 at 07:51

You are missing the reference to 'this'

you can either bind it or change the function like below

Source https://stackoverflow.com/questions/64203791

QUESTION

JavaScript Finding/Comparing and updating duplicate elements of metric/multi dimension array

Asked 2020-Sep-19 at 05:51

I have a metric/multi dimension array like below

...

ANSWER

Answered 2020-Sep-19 at 05:51

Solution uses a Map(could be plain object also) where first time a value is encountered a new entry is created that has an object {col: firstColIndexFound, count:0}.

Next time same value is encountered it checks stored column index and if different updates the count and creates a new value

Source https://stackoverflow.com/questions/63965154

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

Vulnerabilities

No vulnerabilities reported

Install flatdata

You can install using 'pip install flatdata' or download it from GitHub, PyPI.
You can use flatdata like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this document by you, as defined in the Apache-2.0 license, without any additional terms or conditions.

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