Struct DataLoader 

pub struct DataLoader { /* private fields */ }

Load data from various sources

Implementations

impl DataLoader

pub fn new() -> Self

pub fn load(&self, path: &str) -> Result<DataFrame>

Load data from a path (local, S3, or HTTP)

pub fn load_with_format( &self, path: &str, format: DataFormat, ) -> Result<DataFrame>

Load data with explicit format

pub fn load_with_dates( &self, path: &str, date_col: &str, range: &DateRange, ) -> Result<DataFrame>

Load data and filter by date range

pub fn list_s3(&self, prefix: &str) -> Result<Vec<String>>

List files in an S3 prefix

pub fn sample_prices(n_dates: usize, n_assets: usize) -> Result<DataFrame>

Create a sample price DataFrame for testing

Trait Implementations

impl Default for DataLoader

fn default() -> Self

Returns the “default value” for a type.