13 releases
new 0.2.3 | Nov 23, 2024 |
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0.2.2 | Nov 23, 2024 |
0.2.1 | Sep 9, 2024 |
0.2.0 | Jul 12, 2024 |
0.1.5 | May 6, 2024 |
#112 in No standard library
27KB
484 lines
array-section
When you want to return a buffer of unknown size (but smaller than some limit) from/in a const context. This crate defines a type backed by an array where only a (contiguous) subsection of the array may be viewed.
This can be useful in const functions that wish to return an array of size N
,
but with some elements potentially unused.
The crate is no_std
compatible.
/// Returns an array of the square numbers smaller than both x and N.
const fn squares_smaller_than<const N: usize>(x: usize) -> ArraySection<usize, N> {
let mut i = 0;
let mut ans = [0; N];
while i * i < N && i * i < x {
ans[i] = i * i;
i += 1;
}
ArraySection::new(ans, 0..i)
}
assert_eq!(squares_smaller_than::<10>(16), [0, 1, 4, 9]);
Feature flags
std
: lets the error type provide a Backtrace
.
When this feature is disabled the crate is no_std
compatible. Enables the alloc
feature.
alloc
: enables conversion of the array section into Vec
s and Box
ed slices.
License
Licensed under either of Apache License, Version 2.0 or MIT license at your option.Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.