Tag Archives: coding

What “URL encoding” or “percent encoding” is?

By | January 30, 2025

Read about what ‘addingPercentEncoding‘ is and why it’s important in URL handling. addingPercentEncoding(withAllowedCharacters:) is a String method in Swift that encodes special characters in a string to make it URL-safe. This is often called “URL encoding” or “percent encoding.” Let me break this down with examples: Why URL encoding is necessary? Common character encodings: Here’s… Read More »

Custom Theme using Theme Extensions

By | June 25, 2023

Theme extensions were introduced in Flutter 3. But what are Theme Extensions? As the name says, it helps to extend the inbuilt themes with our own extensions. Let’s jump into an example So when you create a flutter app, your basic root widget will look like this return MaterialApp( title: ‘Flutter Theme Extensions’, theme: ThemeData(… Read More »

Interview Problem Solving – Mars Exploration

By | April 29, 2019

Problem Sami’s spaceship crashed on Mars! She sends a series of SOS messages to Earth for help. Letters in some of the SOS messages are altered by cosmic radiation during transmission. Given the signal received by Earth as a string, , determine how many letters of Sami’s SOS have been changed by radiation. For example,… Read More »