Struct Profiler 

pub struct Profiler { /* private fields */ }

Profiles rows one at a time in bounded memory. See the module docs.

use rich_data::profile::{ProfileOptions, Profiler};
use rich_data::Value;

let options = ProfileOptions { sample: 100, ..Default::default() };
let mut profiler = Profiler::new(&["n".to_string()], options).unwrap();
for n in 0..10_000 {
    profiler.push(vec![Value::Int(n)]);
}
let profile = profiler.finish();
assert_eq!((profile.rows(), profile.sample_size()), (10_000, 100));
assert!(profile.sampled());
assert!(profile.heading().starts_with("sampled 100 of 10,000 rows"));

Implementations

impl Profiler

pub fn new( columns: &[String], options: ProfileOptions, ) -> Result<Self, DataError>

A profiler for rows with columns. Fails when ProfileOptions::columns names a column there is not.

pub fn push(&mut self, row: Row)

Add a row (missing cells are null; extra cells are ignored).

pub fn finish(self) -> Profile

The profile of every row pushed.

Trait Implementations

impl Clone for Profiler

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Profiler

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.