single_ method

T single_({
  1. Expr? where,
})

Returns the only element of the source (or the only one matching the optional where predicate).

Throws StateError if the source has zero or more than one matching element.

Implementation

T single_({Expr? where}) => _firstOrSingle(
      this,
      where: where,
      opName: 'single_',
      requireExactlyOne: true,
      orDefault: false,
    );