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Either there is a bug in code, or the documentation needs to be changed for capacity. The documentation states (emphasis added):
Returns how many key-value pairs the map can store without reallocating.
The following code illustrates a reallocation occurs before inserting more than capacity key-value pairs.
use dashmap::DashMap;fnmain(){let map = DashMap::with_capacity(192);let cap = map.capacity();for i in0..cap {
map.insert(i,());}assert_eq!(cap,map.len());assert_ne!(cap,map.capacity());}
I can sporadically trigger a reallocation in as few as 25 inserts (i.e., after ≈ 13% of the originally reported capacity—which is 192 on my machine—is added).
Either there is a bug in code, or the documentation needs to be changed for
capacity
. The documentation states (emphasis added):The following code illustrates a reallocation occurs before inserting more than
capacity
key-value pairs.[zack@laptop src]$ uname -a Linux laptop 6.10.10-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 12 Sep 2024 17:21:02 +0000 x86_64 GNU/Linux [zack@laptop src]$ cargo -V cargo 1.81.0 (2dbb1af80 2024-08-20)
Unsurprisingly, the same problem exists for
DashSet
.The text was updated successfully, but these errors were encountered: