Timeline for Write a function
Current License: CC BY-SA 4.0
4 events
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| Jul 7, 2019 at 17:42 | comment | added | Lukas Lang |
@Roman I've considered adding the zero byte version, but in the end I felt like that's even more questionable: this actually creates the symbol Global`f, while the empty version doesn't do that (you could argue that Null is assigned to %1, but Null is a built-in "function"). But as I've noted in the answer, whether the one byte solution is valid is also not entirely clear...
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| Jul 7, 2019 at 17:10 | comment | added | Roman |
If this solution is acceptable, then the zero-byte answer is just as good: your "definition" of f doesn't do anything (apart from remembering "I've seen f") and can be left out. You can call f[] nonetheless, still returning unevaluated f[]. However, in any case you're mostly playing tricks with the pattern-replacer and not instructing to evaluate a function.
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| Jul 7, 2019 at 9:24 | comment | added | moltarze | Hey, it can be called, and the return value is optional. This counts. | |
| Jul 7, 2019 at 9:11 | history | answered | Lukas Lang | CC BY-SA 4.0 |