User:André van Delft
| My Favorite Languages | |
| Language | Proficiency |
| Algol-60 | Very Rusty |
| BASIC | Very Rusty |
| C | Active |
| C0H | Active |
| C++ | Rusty |
| Perl | Rusty |
| UNIX Shell | Active |
| Java | Very Active |
| Lisp | Very Rusty |
| Modula-2 | Very Rusty |
| Pascal | Very Rusty |
| Scala | Very Active |
| Scriptic | Very Active |
| Smalltalk | Rusty |
| Subscript | Very Active |
| SQL | Very Active |
Mathematician and software developer. Created the following programming languages:
Also extended Java with support for physical dimensions and units of measurement: [PDF file]