#vec #try-reserve #with-capacity #into-raw-parts

with_capacity_safe

A safer alternative to Vec::with_capacity with into_raw_parts which can be used from stable

6 releases (3 breaking)

new 0.4.2 Dec 3, 2021
0.4.1 Dec 3, 2021
0.4.0 Nov 12, 2021
0.3.0 Feb 24, 2021
0.1.0 Feb 17, 2021

#18 in #vec

Download history 9/week @ 2021-08-15 6/week @ 2021-08-22 2/week @ 2021-09-05 3/week @ 2021-09-12 1/week @ 2021-09-19 4/week @ 2021-10-03 4/week @ 2021-10-10 4/week @ 2021-10-17 6/week @ 2021-10-24 6/week @ 2021-10-31 29/week @ 2021-11-07 33/week @ 2021-11-14 18/week @ 2021-11-21 63/week @ 2021-11-28

144 downloads per month
Used in 15 crates (9 directly)

MIT license

5KB

Vec::with_capacity(capacity) panics / aborts when the capacity is too large.

This is a safer alternative which reports Error using try_reserve_exact

//let's pretend this is an arbitrary number read from a broken file
let number_from_file : usize = 100_000_000_000_000;

//try to create a 100TB Vec
let result : Result<Vec<u8>, _> = vec_with_capacity_safe(number_from_file);

//An error is reported
assert!(result.is_err());

vec_into_raw_parts decomposes Vec into ts raw components.

Minimum Supported Version of Rust

1.57.0(stable)

changelog

0.4.2 TryReserve is stabilized at Rust 1.57.0

0.3.0

  • removed WcsErrorType **** Breaking Change ****
  • changed WcsError to enum again. **** Breaking Change ****
  • added try_reserve_error() method to WcsError

0.2.0

  • Added some documentations.
  • Changed implementation to try_reserve_exact(), just in case.
  • Removed WcsError::new **** breaking change ***

No runtime deps

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