Welcome to HCODX Online Compiler
Quick Start:
Ctrl+Enter Run code
Ctrl+S Save / Download
Ctrl+L Clear output
Select a language and start coding.
Compile and run Vyxal code online instantly with HCODX. Our free cloud-based Vyxal compiler supports real-time execution, standard input, syntax highlighting, and code download. No installation or configuration required. Start coding in Vyxal now.
Run Vyxal instantly without installing any IDEs or configuring environments. Our cloud-based Vyxal handles libraries, runtimes, and dependencies automatically so you can focus on writing code.
Whether you are studying algorithms in Vyxal, practicing data structures in Vyxal, or exploring functional programming, our tool provides real-time stdout/stderr feedback with interactive standard input support.
HCODX is a free online compiler and code runner: write code in your browser, execute it on a cloud sandbox, and interact with your program through a live terminal. Students use it for coursework and interview practice; developers use it to test snippets in 85+ languages without setting up a local environment.
The newest heavyweight of the golfing scene, Vyxal emerged in 2020 from a team of Code Golf Stack Exchange members led by lyxal, explicitly designed to combine the best ideas of its predecessors. It is stack-based like 05AB1E but borrows functional elements, lambdas, and vectorization conventions from across the family, wraps them in a 256-character codepage, and adds quality-of-life features its designers wished older languages had, including readable keyword aliases and generous implicit behavior. Development has been unusually community-driven, with major redesigns argued in public and a large built-in library that keeps growing. HCODX runs the interpreter in a real interactive terminal, so codepage programs execute live and stdin is typed as the program waits, with zero setup.
`Hello, World!`
How it works: backticks delimit a Vyxal string literal, which is pushed onto the stack, and the top of the stack is printed implicitly when the program ends. Golfed answers shrink this further with Vyxal's string compression, encoding both words in a few codepage bytes.Vyxal is a first-class competition language across the board: strings fall to its compression, math to vectorized built-ins, and list challenges to lambda-and-map structures shorter than most rivals'. It is also arguably the friendliest entry point into codepage golfing, since its documentation, element search tools, and active chat community were built with newcomers in mind, and its design discussions double as an education in what two decades of golfing languages have learned. HCODX is a free online Vyxal editor, runner and interpreter — an IDE-grade compiler and playground to write and run code online, execute code with live output and live preview, no downloads or web server required.
Vyxal is deliberately synthetic: it takes 05AB1E's stack model and string compression, gestures toward Jelly's compositional power through lambdas and modifier elements, and adds its own conveniences like context variables and flexible implicit output. Being newer, it also iterated on community feedback in real time. Byte counts across the three are close, with winners varying by challenge domain.
No. Most newcomers begin with a small core, string literals, arithmetic, a map lambda, and implicit output, and look up everything else in the element list as needed. The official site's searchable element reference and the community's habit of posting explained answers mean you can decode any existing solution symbol by symbol while learning.
Implicitly, in the family tradition: inputs are read and supplied automatically when elements need operands the stack cannot provide, and they cycle if a program requests more than were given. Explicit input elements and command-line flags adjust parsing and evaluation. Under the HCODX terminal, a program awaiting stdin pauses live until you type, matching local interpreter behavior.
Your current code will be replaced with the default sample. This cannot be undone — download your code first if you want to keep it.
You have unsaved changes. Do you want to save your code before continuing?