Operator Reference
tuple_intersection (Operator)
tuple_intersection — Compute the intersection set of two input tuples.
Signature
tuple_intersection( : : Set1, Set2 : Intersection)
Description
tuple_intersection returns the intersection set from
Set1 and Set2 in Intersection. For example,
if Set1 contains the values [0,1,3,3,5] and Set2
contains the values [2,3,5,10], the output Intersection is [3,5].
The operator also allows mixed types of elements in the input tuples.
However, the elements with different types will be considered as
different elements, i.e. 1.0 and 1 are different. Also, this means, if
Set1 and Set2 have different types of elements, their
intersection set could be empty. For example, if Set1 contains
the values [2,5,3] and Set2 contains the values [2.0,5.0,0,10], the
output Intersection is empty. Please note that the order of tuple
elements resulting from tuple_intersection does not necessarily
conform to the order in the input tuple.
Exception: Empty input tuples
If either or both of the input tuples are empty, the operator returns an empty tuple.
HDevelop In-line Operation
HDevelop provides an in-line operation for tuple_intersection,
which can be used in an expression in the following syntax:
Intersection := intersection(Set1, Set2)
Execution Information
- Multithreading type: independent (runs in parallel even with exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Automatically parallelized on internal data level.
Parameters
Set1 (input_control) tuple(-array) → (integer / real / string / handle)
Input tuple.
Set2 (input_control) tuple(-array) → (integer / real / string / handle)
Input tuple.
Intersection (output_control) tuple(-array) → (integer / real / string / handle)
The intersection set of two input tuples.
Result
If the parameters are valid, the operator
tuple_intersection returns the value 2 (
H_MSG_TRUE)
.
Alternatives
See also
tuple_difference,
tuple_symmdiff,
tuple_union
Module
Foundation