Polymorphism means “many forms” — it’s the ability of different classes to respond to the same method call in their own way. It’s one of the four pillars of object-oriented programming (along with encapsulation, inheritance, and abstraction). A Quick Look at the Example Key idea: animal.speak() looks identical for every animal, but produces a different…
Method overriding is when a subclass provides its own implementation of a method that already exists in its parent class. The subclass’s method “takes over” — when called on an instance of the subclass, the new method runs instead of the parent’s. A Quick Look at the Example a. What is Method Overriding? Method overriding…
Converting CSV to TOML by hand is tedious. One wrong bracket and your config breaks. I built a free tool that solves this. What it does: Use cases: Privacy:100% client-side. Nothing uploaded. Try it: tools.kandz.me/csv-to-toml
Class inheritance allows you to create a new class that inherits properties and methods from an existing class. The new class (subclass/child) can reuse, extend, or override the behavior of the parent class (superclass/base). A Quick Look at the Example a. What is Class Inheritance? Inheritance is a mechanism where one class (the subclass or…
Stripping XML attributes by hand is error-prone. One regex mistake and you corrupt the markup. I built a free tool that solves this. What it does: Use cases: Privacy:100% client-side. Nothing uploaded. Try it: tools.kandz.me/xml-attribute-stripper
Comments are used to explain your code or disable a portion of it. They are ignored by JavaScript and are purely for humans (including your future self). Overview of Comment Types Type Syntax Use Case Single-line // comment Brief explanations, inline notes Multi-line /* comment */ Longer explanations, disabling code blocks a. JavaScript Comments Comments…
Merging nested JavaScript objects is a pain. Object.assign does a shallow merge. Spread syntax overwrites nested keys. You end up writing custom recursion logic every time. I built a free tool that solves this. What it does: Use cases: Privacy:100% client-side. Nothing uploaded. Try it: tools.kandz.me/object-merger
Glassmorphism is everywhere, but writing the CSS by hand is tedious. You want a frosted glass card. You open your editor. You start guessing blur values. You forget the Safari prefix. You realize your text is blurry because you used filter instead of backdrop-filter. I built a free tool that solves this. What it does:…
Debugging SVG viewBox coordinates by hand is a nightmare. You open an SVG file. You need to know where a specific shape sits. You start counting pixels. You guess. I built a free tool that solves this. What it does: Use cases: Privacy:100% client-side. Your SVG never leaves your browser. No upload. No server processing….
Ever tried to open a 100MB JSON file in your browser? Crashed. I built a free tool that splits large JSON arrays into smaller, manageable chunks. What it does: Why it’s useful: 100% client-side. Nothing uploaded. Try it: tools.kandz.me/json-array-splitter
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