OxL Reference
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data Group

Group produced by group by … into g in query expressions (§5.9).

Example:

oxl✓ checked in CI
data Sale { shop: str; amount: i64 }

fn main() io {
  let sales = [Sale{ shop: "a", amount: 5 }, Sale{ shop: "b", amount: 7 }, Sale{ shop: "a", amount: 1 }]
  for line in from s in sales group by s.shop into g select "{g.key}={g.items.len()}" {
    print(line)
  }
}
Output
a=2
b=1
pub(api) data Group<K, T>

Since. 1.0.0-beta

Fields

pub(api) key: K

The key of the group.

pub(api) items: List<T>

The elements with this key, in order.

Methods

count() -> usize
Number of elements of the group (g.count() in group by …

Defined in: std/core/types.oxl:778

See also