DoFirst<A extends E> method

void DoFirst<A extends E>(
  1. void fn(
    1. A entity
    )
)

Query-like Calls fn with the first matching element. Does nothing if the result set is empty.

Implementation

void DoFirst<A extends E>(void Function(A entity) fn) {
  final entities = On<A>()._resolve();
  if (entities.isEmpty) return;
  fn(entities.first as A);
}