Oana Rinaldi – Page 21 – Art of Coding

$PATH Demystified: Add Your Scripts to Bash Path Like a DevOps Engineer

$PATH Demystified: Add Your Scripts to Bash Path Like a DevOps Engineer The $PATH environment variable is one of the most crucial, yet underappreciated, parts of a Unix-like operating…

Oana Rinaldi August 26, 2025

Shell / Bash

Create a CLI Tool to Monitor System Health Using Bash

Create a CLI Tool to Monitor System Health Using Bash Monitoring system health doesn’t always require elaborate dashboards or third-party tools. With a few lines of Bash, you can…

Oana Rinaldi August 25, 2025

Java

Java Regex Recipes for Everyday Text Cleanup

Java Regex Recipes for Everyday Text Cleanup Regular expressions (regex) are a powerful tool for textual data transformation and validation. In Java, the java.util.regex package provides robust support for…

Oana Rinaldi August 24, 2025

JavaScript

From CSV to JSON: A Node.js Utility You Can Reuse Anywhere

From CSV to JSON: A Node.js Utility You Can Reuse Anywhere CSV (Comma-Separated Values) is a widely used data format for tabular data, but for modern web applications, JSON…

Oana Rinaldi August 23, 2025

JavaScript

JavaScript Debounce Function Explained with Real UX Fixes

JavaScript Debounce Function Explained with Real UX Fixes When users type in a search input, their keystrokes can trigger a flurry of API calls — resulting in laggy interfaces,…

Oana Rinaldi August 22, 2025

SQL

Mastering SQL Window Functions for Financial Analytics

Mastering SQL Window Functions for Financial Analytics SQL window functions have become an indispensable tool for data analysts working in finance. Whether you’re analyzing stock prices, transaction logs, or…

Oana Rinaldi August 21, 2025

Sorting Algorithms

Sorting Large Datasets: QuickSort vs MergeSort Visualized in Java

Sorting Large Datasets: QuickSort vs MergeSort Visualized in Java Sorting algorithms are fundamental to computing, and mastering them is crucial for every developer. In this blog post, we’ll compare…

Oana Rinaldi August 20, 2025

Python

Scraping the Weather: Build a Python CLI for Real-Time Forecasts

Scraping the Weather: Build a Python CLI for Real-Time Forecasts As developers, we often need quick access to live data—like weather—without opening a browser. In this guide, we'll build…

Oana Rinaldi August 19, 2025

Python

Find Longest Consecutive Sequence Algorithm Solved in Python One-Liner Style

Find Longest Consecutive Sequence Algorithm Solved in Python One-Liner Style Introduction Finding the longest consecutive sequence in an unsorted list of integers is a classic problem that frequently shows…

Oana Rinaldi August 18, 2025

SQL

Optimize SQL Queries by Profiling Execution Plans

Optimize SQL Queries by Profiling Execution Plans SQL performance tuning is a critical skill for developers and database administrators alike. Poorly optimized queries can cripple application performance, increase costs,…

Oana Rinaldi August 17, 2025