xpile 0.1.615

Polyglot transpile workbench (Python/C/C++/Rust/Ruchy/Lean ↔ Rust/Ruchy/PTX/WGSL/SPIR-V) with provable contracts at every layer.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29

from typing import Optional


def find_even(xs: list[int]) -> Optional[int]:
    for x in xs:
        if x % 2 == 0:
            return x
    return None


def first_long(words: list[str]) -> Optional[str]:
    for w in words:
        if len(w) > 3:
            return w
    return None


def maybe_reciprocal(x: float) -> Optional[float]:
    if x == 0.0:
        return None
    return 1.0 / x


def always_none() -> Optional[int]:
    return None


def always_some(x: int) -> Optional[int]:
    return x