feat(metrics/family): 🍭 len() returns the number of metrics
#246
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this commit introduces a `len()` method to `Family<S, M, C>`, which returns the number of series within a metric family. see also prometheus#245, which allows callers to check if a family `contains()` a given label set. Signed-off-by: katelyn martin <[email protected]>
cratelyn
changed the title
len() returns the number of metricslen() returns the number of metrics
```shell
$ cargo clippy --all-features --all-targets --tests
Compiling prometheus-client v0.23.0 (/path/to/prometheus-client)
warning: struct `Family` has a public `len` method, but no `is_empty` method
--> src/metrics/family.rs:309:5
|
309 | pub fn len(&self) -> usize {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
= note: `#[warn(clippy::len_without_is_empty)]` on by default
warning: `prometheus-client` (lib) generated 1 warning
warning: `prometheus-client` (lib test) generated 1 warning (1 duplicate)
Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.63s
```
Signed-off-by: katelyn martin <[email protected]>
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this commit introduces a
len()method toFamily<S, M, C>, which returns the number of series within a metric family.see also #245, which allows callers to check if a family
contains()a given label set.