Struct bookdata::amazon::RatingRow

pub struct RatingRow {
    pub user: i32,
    pub asin: String,
    pub rating: f32,
    pub timestamp: i64,
}

Structure for scanned ratings.

This data structure is serialized to ratings.parquet in the Amazon directories.

Fields

user: i32

asin: String

rating: f32

timestamp: i64

Trait Implementations

impl<'de> Deserialize<'de> for RatingRow

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl FrameBuilder<RatingRow> for RatingRowFrameBuilder

fn with_capacity(cap: usize) -> Self

Instantiate a frame builder with a specified capacity.

fn append_row(&mut self, row: RatingRow)

Add a row to the frame builder.

fn build(self) -> PolarsResult<DataFrame>

Finish the builder and create a data frame.

fn extend<I>(&mut self, iter: I)

where I: IntoIterator<Item = R>,

Add an iterable of items to the frame.

impl<'a> FrameStruct<'a, RatingRow> for RatingRowFrame<'a>

fn new(df: &'a DataFrame) -> PolarsResult<Self>

fn read_row(&mut self, idx: usize) -> Result<RatingRow, RowError>

impl Serialize for RatingRow

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TableRow for RatingRow

type Frame<'a> = RatingRowFrame<'a>

The frame struct for this row type.

type Builder = RatingRowFrameBuilder

The frame builder type for this row type.

fn schema() -> Schema

Get the schema for this table row.