I want to create my own programming language. I have some requirements, help me write the language specification. I want it to be a mix of C, HP's RPL, Rust, and Uiua. Aside from the postfix and stack based features, I would like it to be as C-Like a possible.

## C
- Statically typed
- Syntax style
- Must include an equivalent to Functions/Methods/Procedures
- Heap requires manual memory management
- Structs and Unions
- Comments start with `//`

## RPL
- All **postfix** operators (RPN)
- **Stack** based

## Rust
- Traits
- Unions are tagged

## Uiua
- Include array operators (optional modern array-oriented thinking)

## Other
- Heap is global, primarily intended for constraints and functions
- No local variables, functions or their equivalent modify the stack
- Eval operator
- Mainly interpreted, but possibly compilable in the future
- Types are implicit