Operator Reference
tuple_sem_type (Operator)
tuple_sem_type
— Return the semantic type of a tuple.
Signature
Description
tuple_sem_type
returns the semantic type of the input tuple
T
.
The type is returned as a string value in the output parameter
SemType
.
If T
contains only valid handles of the same type, the
corresponding semantic type of the handles is returned (e.g.,
'matrix' ).
If it contains only valid or invalid handles,
or handles of different type, 'handle' is returned.
If T
contains elements of different types, 'any' is
returned.
Exception: Empty input tuple
If the input tuple is empty, the operator returns 'any' .
HDevelop In-line Operation
HDevelop provides an in-line operation for tuple_sem_type
,
which can be used in an expression in the following syntax:
SemType := sem_type(T)
Execution Information
- Multithreading type: independent (runs in parallel even with exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Parameters
T
(input_control) tuple(-array) →
(handle / real / integer / string)
Input tuple.
SemType
(output_control) string →
(string)
Semantic type of the input tuple as a string.
Example (HDevelop)
create_matrix (3, 3, 0, MatrixID) tuple_sem_type (MatrixID, SemType) * SemType == 'matrix' (Handle of specific type) clear_handle (MatrixID) tuple_sem_type (MatrixID, SemType) * SemType == 'handle' (Cleared handle) tuple_sem_type ([MatrixID,123], SemType) * SemType == 'any' (Mixed types)
Result
If the parameters are valid, the operator
tuple_sem_type
returns the value 2 (
H_MSG_TRUE)
.
Alternatives
tuple_is_int
,
tuple_is_number
,
tuple_is_real
,
tuple_is_string
,
tuple_type
See also
Module
Foundation