October 22, 2024
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OiO.lk Blog
PHP

Laravel: error when trying to start up server

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  • October 16, 2024

I installed composer, php and laravel via below code as found in the Laravel docs Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://php.new/install/windows')) creation of a new app worked fine, when running "php artisan serve" the server starts, then throws below error and shuts itself down Undefined array key 1

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C#

Is it safe to pass a uint32_t to a function which defines the input type as uint64_t?

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  • October 16, 2024

Pass a uint32_t to a function that requires uint64_t: You can do this, and all compilers I know accept it, even in strict modes. Is it explicitly allowed by the standard? Is it safe? What does MISRA-C say about this? void MyFunction(uint64_t arg) {} int main(void) { uint32_t xyz = 1u; MyFunction(xyz); } You need

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java

Why are the product.id and recipeIngredient.product fields null in the logs?

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  • October 16, 2024

And what might be causing the total unit cost of the ingredients to always calculate to zero? Important: Despite these issues in the logs, the product and the unit cost of the ingredients are saved in the database without any problems. Entity ProductDTO: public class ProductDTO { private Long id; private String name; private String

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python

How to Solve Extremely Ill-Conditioned Linear System of Equations Ax = b?

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  • October 16, 2024

I am working on solving a system of linear equations with multiple variables. The system is of the form Ax=b, where the matrix A is extremely ill-conditioned. I have been struggling to find a stable solution for this problem. I have tried several numerical approaches, including genetic algorithms and other optimization methods, but I have

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javascript

How to async await in react render function?

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  • October 16, 2024

I need to display JSX that depends on data from a network request. In my first attempt, the return statement was hit before the network request resolved const showSubscriptions = () => { const [methods, setMethods] = useState([]); let subscriptionsRef = React.useRef({}) useEffect(() => { const getCommunicatorMethods = async () => { const { data

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pdf

Integrate pdf.js into a JavaFX Application without adding the entire pdf.js repository

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  • October 16, 2024

I’m working on a JavaFX application where I want to integrate pdf.js to display PDF files. However, I’m looking for a way to do this without having to include a large number of files from the pdf.js repository directly into my project. So far, I’ve found this following ways to do it: PDFBox: this way

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templates

C# Show pre-configured template based on a condition in WPF

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  • October 16, 2024

So let’s say I have multiple grids laid out, 2 of them are static and will not change, but the third grid, is meant to show elements based on a set of conditions outlined. If one condition is met, then the third grid should show 2 input boxes. If another is met, 1 input box,

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security

sanitize-html not acknowledging allowedSchemes options

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  • October 16, 2024

var sanitizeHtml = require("sanitize-html"); const ALLOWED_SCHEMES = ['http', 'https']; const htmlStr="\""><meta http-equiv="refresh" content="0;url=file:///etc/passwd" />'; const cleanedHTML = sanitizeHtml(htmlStr, { allowedAttributes: false, allowedTags: false, allowVulnerableTags: true, allowedSchemes: ALLOWED_SCHEMES, allowProtocolRelative: false, disallowedTagsMode: 'completelyDiscard', allowedSchemesByTag: { img: [...ALLOWED_SCHEMES, 'data'] }, }); console.log(cleanedHTML); Actual behavior '"&gt;<meta http-equiv="refresh" content="0;url=file:///etc/passwd" /> Expected behavior '"&gt;<meta http-equiv="refresh" content="0" /> **Description of the issue:

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SQL

Which Postgres schema should I go with?

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  • October 16, 2024

This is my first time working with databases. I’m designing a database for an e-commerce project. I ended up with two versions of the schema, and I don’t know which one to go with or what its pros and cons are. V1: -- Person Schema create table person ( id serial primary key, name text

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CSS

How to change text spacing in HTML time inputs?

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  • October 16, 2024

I am making a time range selector, and using Bootstrap. It needs to be a specific fixed with so that it can fit with the other components. I’ve noticed that Firefox renders the text of a type="time" input slightly more spaced out than Chrome does, and that makes the text get cut off The overall

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