lessons | Material for our lessons

by coderefinery Shell Version: Current License: No License

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lessons is a Shell library. lessons has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Material for our lessons (legacy versions).

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lessons has a low active ecosystem.

It has 23 star(s) with 10 fork(s). There are 15 watchers for this library.

It had no major release in the last 6 months.

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

It has a neutral sentiment in the developer community.

The latest version of lessons is current.

Quality

lessons has no bugs reported.

Security

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

License

lessons 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

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

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lessons Key Features

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lessons Examples and Code Snippets

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Community Discussions

Trending Discussions on lessons

Three.js faces/vertices cut off but Bounding Box correct

MongoDB: add object to subarray if not exists

Cannot calculate 2D position from 3D co-ordinates

Are there websites where I can learn Python algorithms "in the browser"

How can I make my WebGL Coordinate System "Top Left" Oriented?

Filling an array of struct from a file with fscanf while checking new line (feedback)

validateDOMNesting(...): cannot appear as a child of problem

I have a issue about execute in python flask

Elements and positioning not applying

Android Webview Video - net::ERR_BLOCKED_BY_RESPONSE

QUESTION

Three.js faces/vertices cut off but Bounding Box correct

Asked 2021-Jun-15 at 12:48

I'm using BufferGeometry to handle meshes with lots of vertices, faces and normals, which I supply via TypedArrays. During rendering, the Scene and its Mesh is constructed without any warnings or errors in the console. With BoxHelper I've constructed a Bounding Box around the mesh.

Now the strangest thing happens: Although the Bounding Box is perfectly correct, the faces/vertices are cut off somewhere in the middle.

To see what I mean, here is the comparison of two models rendered with a python script (left) and rendered with Three.js (right):

The code I've used for this task can be found here in this pastebin. Any help is highly appreciated.

...

ANSWER

Answered 2021-Jun-15 at 12:48

After some digging, I found my mistake. itemSize of BufferAttribute for the faces has to be 1.

So I've changed this line

Source https://stackoverflow.com/questions/67902627

QUESTION

MongoDB: add object to subarray if not exists

Asked 2021-Jun-15 at 03:06

I searched many questions here and other articles on the web, but they all seem to describe somehow different cases from what I have at hand.

I have User schema:

...

ANSWER

Answered 2021-Jun-15 at 03:06

You can create sub-documents avoid _id. Just add _id: false to your subdocument declaration.

Source https://stackoverflow.com/questions/67979018

QUESTION

Cannot calculate 2D position from 3D co-ordinates

Asked 2021-Jun-11 at 13:38

I am selecting vertices from a point cloud using angular and three.js. I have been trying to label a selected vertex with its x,y,z information. I have been using these resources in my attempt:

and I can't get either to work as described.

My code currently is:

...

ANSWER

Answered 2021-Jun-11 at 13:38

This is as close as I have managed to get it:

Source https://stackoverflow.com/questions/67924665

QUESTION

Are there websites where I can learn Python algorithms "in the browser"

Asked 2021-Jun-07 at 15:39

I am learning algorithms in Python right now. Are there websites where I can learn these algorithms "in the browser" with byte-size lessons, like Codecademy and Freecodecamp have, free or paid?

...

ANSWER

Answered 2021-Apr-21 at 08:17

so I really liked hackerrank.com for learning algorithms. It has a special section for that and even more.

if you have 10€/10$ left, there are courses on Udemy on sale sometime, maybe you can find one for algorithms too

Source https://stackoverflow.com/questions/67191775

QUESTION

How can I make my WebGL Coordinate System "Top Left" Oriented?

Asked 2021-Jun-07 at 08:43

Because of computation efficiency, I use a fragment shader to implement a simple 2D metaballs algorithm. The data of the circles to render is top-left oriented.

I have everything working, except that the origin of WebGL's coordinate system (bottom-left) is giving me a hard time: Obviously, the rendered output is mirrored along the horizontal axis.

Following https://webglfundamentals.org/webgl/lessons/webgl-2d-rotation.html (and others), I tried to rotate things using a vertex shader. Without any success unfortunately.

What is the most simple way of achieving the reorientation of WebGL's coordinate system?

I'd appreciate any hints and pointers, thanks! :)

Please find a working (not working ;) ) example here: https://codesandbox.io/s/gracious-fermat-znbsw?file=/src/index.js

...

ANSWER

Answered 2021-Jun-07 at 08:43

Since you are using gl_FragCoord in your pixels shader, you can't do it from the vertex shader becasuse gl_FragCoord is the canvas coordinates but upside down. You could easily invert it in javascript in your pass trough to WebGL

Source https://stackoverflow.com/questions/67733712

QUESTION

Filling an array of struct from a file with fscanf while checking new line (feedback)

Asked 2021-Jun-06 at 15:40

I have a .txt file where every line is like:

...

ANSWER

Answered 2021-Jun-06 at 14:56

I think it's ok only if you know that the input of Lesson must be in pairs and it wont be odd. in this case you can fill the end of the array lessons with 0 or null or even -1 or so. You do it because you probably want to print it afterward. something like that:

Source https://stackoverflow.com/questions/67860114

QUESTION

validateDOMNesting(...): cannot appear as a child of problem

Asked 2021-Jun-06 at 12:48

I am using material-ui in my react.js project. When I try to test my Row component, I get that console.error:

...

ANSWER

Answered 2021-Jun-06 at 12:19

The tr element must have parent table element. So, wrapping your component with table will solve the issue.

The tr cannot be descendent of div element.

Source https://stackoverflow.com/questions/67858973

QUESTION

I have a issue about execute in python flask

Asked 2021-Jun-03 at 14:14

I am new in build python api. I want to get the data depend on date.

https://programminghistorian.org/en/lessons/creating-apis-with-python-and-flask#what-is-an-api

I am following this link to code my api but I don't know what can I do in execute.

This is my python code:

...

ANSWER

Answered 2021-Jun-03 at 11:35

When you are sending requests to a back-end it does not fill out the form an easy way to do it would be to add the query values in the URL

Source https://stackoverflow.com/questions/67820511

QUESTION

Elements and positioning not applying

Asked 2021-Jun-03 at 12:57

I am working out of "HTML5 and CSS5 Illustrated Complete" Second Edition by Sasha Vodnik. I did the initial Unit D example to a Tee, however logo styling and the positioning aren't applying correctly or at all.

...

ANSWER

Answered 2021-Feb-16 at 19:29

Add top: 0; to your header in CSS. It should look like this:

Source https://stackoverflow.com/questions/66230565

QUESTION

Android Webview Video - net::ERR_BLOCKED_BY_RESPONSE

Asked 2021-Jun-01 at 20:08

I am developing an Excel Tutorials app using Android Studio in which I am creating the lessons using html. In each lesson, there is a step-by-step instruction and video instructions. Now, when I am running my Application using real device. It doesn't shows only the text, not the video. However, when I am testing the html in laptop using Google Chrome, its working fine. Now what should I do?

I have seen many questions like this but the answers are of how to show the video. But in my html there is text also.

My code of html :

...

ANSWER

Answered 2021-Jun-01 at 07:41

Try Enabling JavaScript to webView, using web settings before loading.

WebSettings webSettings = webv.getSettings(); webSettings.setJavaScriptEnabled(true);

Source https://stackoverflow.com/questions/67778114

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