DeveloperBreeze

Matrix Multiplication in Python using NumPy

python
#Matrix Multiplication 
# Import the NumPy library
import numpy as np

# Define two matrices
matrix1 = np.array([[1, 2], [3, 4]])
matrix2 = np.array([[5, 6], [7, 8]])

# Perform matrix multiplication using the dot function
result = np.dot(matrix1, matrix2)

Continue Reading

Discover more amazing content handpicked just for you

Code

How to Create a New MySQL User with Full Privileges

No preview available for this content.

May 01, 2025
Read More
Code
python

Configuring SQLAlchemy with PostgreSQL on Heroku: A Quick Guide 

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
import os

app = Flask(__name__)

# Adjust the DATABASE_URL format for SQLAlchemy compatibility
database_url = os.getenv("DATABASE_URL", "")
if database_url.startswith("postgres://"):
    database_url = database_url.replace("postgres://", "postgresql+psycopg2://")

app.config["SQLALCHEMY_DATABASE_URI"] = database_url

# Initialize the SQLAlchemy object
db = SQLAlchemy(app)

# Sample route to test the setup
@app.route("/")
def index():
    return "Database URI setup complete!"

if __name__ == "__main__":
    app.run()
  • This code retrieves the DATABASE_URL from the environment.
  • If DATABASE_URL starts with postgres://, it replaces it with postgresql+psycopg2://.
  • The db instance is initialized with SQLAlchemy(app) for use with SQLAlchemy ORM.
  • The replacement of "postgres://" with "postgresql+psycopg2://" is necessary because of a compatibility issue between the URI format provided by Heroku and the URI format expected by SQLAlchemy.

Nov 08, 2024
Read More
Code
php

How to Delete All WordPress Posts and Their Uploads Using a Custom PHP Script

No preview available for this content.

Oct 25, 2024
Read More
Code
php

How To enable all error debugging in PHP

No preview available for this content.

Oct 25, 2024
Read More
Code
bash

How to Paste in an SSH Terminal Without a Mouse

No preview available for this content.

Oct 20, 2024
Read More
Note
javascript nodejs

Vite vs Webpack

  • Vite: Vite has a growing ecosystem with plugins, and it's designed to be framework-agnostic, although it has strong support for Vue and React.
  • Webpack: Webpack has a mature ecosystem with a vast array of plugins and integrations, making it suitable for complex and large-scale projects.

In summary, while both Vite and Webpack serve similar purposes in managing and bundling assets for web applications, Vite is often preferred for its speed and simplicity, particularly in development, whereas Webpack offers more customization and flexibility, making it a strong choice for complex builds.

Aug 14, 2024
Read More
Code
nodejs graphql

GraphQL API Server with Node.js and Apollo Server

  • Add a Book
     mutation {
       addBook(title: "1984", author: "George Orwell") {
         title
         author
       }
     }

Aug 12, 2024
Read More
Code
javascript

React Custom Hook for API Requests

No preview available for this content.

Aug 12, 2024
Read More
Code
csharp

Unity Inventory System using Scriptable Objects 

using System.Collections.Generic;
using UnityEngine;

public class Inventory : MonoBehaviour
{
    public List<Item> items = new List<Item>();
    public int capacity = 20;

    public bool AddItem(Item item)
    {
        if (items.Count >= capacity)
        {
            Debug.Log("Inventory is full!");
            return false;
        }

        if (item.isStackable)
        {
            Item existingItem = items.Find(i => i.itemName == item.itemName);
            if (existingItem != null)
            {
                // Stack logic (if needed)
                Debug.Log($"Stacking {item.itemName}");
                return true;
            }
        }

        items.Add(item);
        Debug.Log($"{item.itemName} added to inventory.");
        return true;
    }

    public void RemoveItem(Item item)
    {
        if (items.Contains(item))
        {
            items.Remove(item);
            Debug.Log($"{item.itemName} removed from inventory.");
        }
    }

    public void UseItem(Item item)
    {
        if (items.Contains(item))
        {
            item.Use();
        }
    }
}

A basic setup for displaying the inventory items in the Unity UI.

Aug 12, 2024
Read More
Code
csharp

Unity Player Controller Blueprint

  • Animation Integration: Add animator components and trigger animations based on movement and jump states.
  • Advanced Physics: Integrate more complex physics interactions, such as slopes or surface friction.
  • Networking: Adapt the controller for multiplayer environments using Unity’s networking solutions.

Aug 12, 2024
Read More
Code
bash

Bash: How to Loop Over Files in a Directory

No preview available for this content.

Aug 12, 2024
Read More
Code
csharp

C#: How to Read a File 

using System;
using System.IO;

class ReadFileExample
{
    static void Main()
    {
        string path = @"C:\example.txt";
        string text = File.ReadAllText(path);
        Console.WriteLine(text);
    }
}

Aug 12, 2024
Read More
Code
html

HTML: Basic Template Structure

No preview available for this content.

Aug 12, 2024
Read More
Code
php

PHP: How to Connect to a MySQL Database

No preview available for this content.

Aug 12, 2024
Read More
Code
css

CSS: How to Center a Div Horizontally and Vertically

No preview available for this content.

Aug 12, 2024
Read More
Code
java

Java: How to Sort a List

No preview available for this content.

Aug 12, 2024
Read More
Code
javascript nodejs

Node.js: How to Create an HTTP Server

No preview available for this content.

Aug 12, 2024
Read More
Code
sql

SQL: How to Select Top N Records

No preview available for this content.

Aug 12, 2024
Read More
Code
python

Python: How to Reverse a String

No preview available for this content.

Aug 12, 2024
Read More
Code
javascript json

How to Deep Clone a JavaScript Object

No preview available for this content.

Aug 12, 2024
Read More

Discussion 0

Please sign in to join the discussion.

No comments yet. Start the discussion!