Struct Group 

pub struct Group<'g, R> { /* private fields */ }

The rows of a single reduce group. Created by Groups::next_group.

Implementations

impl<R: Read> Group<'_, R>

pub fn key(&self) -> &GroupKey

The group’s reduce key.

Populated only for groups from JobReader::groups_by; otherwise GroupKey::is_empty is true.

pub fn next_row(&mut self) -> Result<Option<Row<'_>>>

Returns the next row of this group, or None at the group boundary.

Errors

Returns JobError if the stream cannot be read or does not parse.

Trait Implementations

impl<'g, R: Debug> Debug for Group<'g, R>

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

Formats the value using the given formatter.