💤
The progress bar with sane defaults that doesn't slow down your loops. Inspired by tqdm.
[]
= "0.3"
Features
- Seamless integration with iterators and streams
- If possible,
zzz
infers the target size fromsize_hint()
- If possible,
- Automagically determines and updates a good printing frequency
- Very low overhead: doesn't slow down your loop, pretty much no matter how simple the loop body. On Skylake, the average overhead per iteration for a
!Sync
/add
based progress bar is 3 CPU cyclesSync
/add_sync
based progress bar is ~40 CPU cycles (depends on how many threads are updating the shared state)
Cargo Features
streams
: Enables support for.progress()
on async streams (futures::streams::Stream
)
Usage examples
Adding a progress bar to an iterator
use ProgressBarIterExt as _;
for _ in .into_iter.progress
If size_hint()
for the iterator defines an upper bound, it is automatically taken as the target. Otherwise, a progress indicator ("spinner") is displayed.
Manually creating and advancing a progress bar
use ProgressBar;
let mut pb = with_target;
for _ in 0..1234
Manually creating a spinner (for unknown target progress indicator)
use ProgressBar;
let mut pb = spinner;
for _ in 0..5678