import numpy as np # Create a mutable byte buffer buf = bytearray(100) # Create a memoryview mv = memoryview(buf) # Convert it to a NumPy array (zero-copy) arr = np.frombuffer(mv, dtype=np.uint8) print(arr.shape) # Output: (100,)
1. Memory-Mapping a File for Reading import mmap # Open file in read mode with open(“large_file.txt”, “r”) as f: # Memory-map the file (read-only mode) with mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ) as mm: # Read contents as bytes print(mm[:100]) # Read first 100 bytes print(mm.find(b”search_term”)) # Find a term 2.Memory-Mapping a File for Writing import mmap # …
How to Use mmap for Fast File I/O Operations in Python Read More »
When working with C ++ Standard Template Library (STL), Vector Container is one of the most commonly used data structures. Often, developers need to sort a vector of objects based on a particular feature. C ++ provides a powerful and flexible way to achieve this using Sorting the Headquarters. In this blog post, we will …
document object model it is interface for web documents <div id=”box” style=”width: 50px; height: 50px; background: green; position: absolute; top: 50px; left: 50px;”></div> <button onclick=”moveRight()”>Move Right</button> <script> function moveRight() { let box = document.getElementById(“box”); let left = parseInt(box.style.left) || 0; box.style.left = (left + 50) + “px”; } </script>
install multer npm install multer express create a file upload.js const express = require(“express”); const multer = require(“multer”); const app = express(); const port = 3000; // Configure multer for file uploads const storage = multer.diskStorage({ destination: (req, file, cb) => { cb(null, “uploads/”); }, filename: (req, file, cb) => { cb(null, Date.now() + “-” …
it is an css code where an element can be rotated to rotate an element it is a basic rotation of 45degrees .rotate { width: 100px; height: 100px; background-color: blue; transform: rotate(45deg); } usage in html in division tag <div class=”rotate”></div>
The vectors in the C++ Standard Template Library are dynamic arrays that can increase or decrease in size. For efficient data manipulation, vectors offer powerful built-in functions and flexibility. Today, we will look at insertion, deletion, iteration, capacity management, sorting, and swapping operations, with an example. What is Vector and its Properties A Vector is …
install express and body-parser sh npm install express body-parser multer server.js const express = require(“express”); const bodyParser = require(“body-parser”); const app = express(); const port = 3000; app.use(bodyParser.urlencoded({ extended: true })); // Serve HTML form app.get(“/”, (req, res) => { res.send(` <form action=”/submit” method=”POST”> <input type=”text” name=”name” placeholder=”Enter your name” required /> <button type=”submit”>Submit</button> </form> …
In this tutorial, we are going to learn and understand k-means clustering What is K- Means Clustering? It is one of the widely used unsupervised learning algorithms. It is used to group unlabeled data in K- number of distinct clusters. So that every data in the same cluster has the same property. The objective is …
Performing Clustering with K-Means Algorithm in Python Read More »
In this tutorial, we are going to learn the Decision Tree Classifier in Python. What is the Decision Tree Classifier in Python? A Decision Tree is a supervised learning model that can be applied in classification and regression tasks. It represents decisions and possible consequences in a simple tree structure to read and understand. In …
Decision Tree Classifier in Python Using scikit-learn Read More »