!NULL

!NULL is a unique programming language created in 2025. The name refers to the concept of NULL, which means nothing. The language makes "not null" (!NULL) into something functional.

Overview

!NULL uses a detailed command syntax where all commands follow this pattern:

!NULL{COMMAND}-:[parameters]

Commands

Output

• PRNT - Print text
  • Syntax: !NULL{PRNT}-:["text"(Nt)]
  • N is an optional repetition count

Variables

• ASK - Get user input
  • Syntax: !NULL{ASK}-:["prompt"{name("varname")}]
• SMN - Show or summon a variable, function, or list
  • Syntax: !NULL{SMN}-:["varname"]

Lists

• LST - Create a list
  • Syntax: !NULL{LST}-:["listname"{item1, item2, item3}]
• RND - Pick a random element from a list
  • Syntax: !NULL{RND}-:["listname"{name("varname")}]

Control Flow

• IF - Conditional execution
  • Syntax: !NULL{IF}-:[condition{command}]
  • Supports: ==, !=, >, <, >=, <=
• ELIF - Else-if branch
• ELSE - Else branch
• LOOP - Loop execution

Functions

• FUNC - Define a function
  • Syntax: !NULL{FUNC}-:["name"{command}]

File Operations

• OPEN - Read a file
• WRT - Write to a file
• EDIT - Edit a file
• RMV - Remove a file
• PRMV - Remove a file (requires root access)
• CPY - Copy a file

Math

• CLCT - Calculate
  • Syntax: !NULL{CLCT}-:[a + b{name("result")}]
  • Supports: +, -, *, /

String Operations

• UPER - Uppercase
• LOWR - Lowercase
• REVR - Reverse
• CPTL - Capitalize

Timing

• TIMR - Timer
• CLDN - Sleep

System

• EXT - Exit

Examples

Hello World

!NULL{PRNT}-:["Hello World"]

Number Guessing Game

!NULL{ASK}-:["Choose a Random Number: "{name("list")}]
!NULL{LST}-:["lis"{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}]
!NULL{RND}-:["lis"{name("name")}]
!NULL{SMN}-:[name]
!NULL{IF}-:[list == name{PRNT{"You Win"}}]

Implementation

The reference interpreter is written in Python and consists of over 600 lines.

Computational Class

!NULL is Turing-complete.