Concat turns two individual streams into one.

Discard is an operator that doesn't produce any object.

Union returns a new UnionOperator.

ErrInvalidResult is returned when an expression supposed to evaluate to an object returns something else.

ErrStreamClosed is used to indicate that a stream must be closed.

A ConcatOperator concatenates two streams.

DiscardOperator is an operator that doesn't do anything.

OnConflictOperator handles any conflicts that occur during the iteration.

Range represents a range to select values after or before a given boundary.

UnionOperator is an operator that merges the results of multiple operators.

An Operator is used to modify a stream.

An OperatorFunc is the function that will receive each value of the stream.