Type representing sequences

Use only in the MuPAD Notebook Interface.

This functionality does not run in MATLAB.


testtype(obj, (obj_type, <min_nr, <max_nr>>))


With Type::SequenceOf, sequences with specified objects can be identified.

The call testtype(obj, Type::SequenceOf(obj_type)) checks, whether obj is a sequence with elements of the given type obj_type. In that case, it TRUE, otherwise FALSE.

A sequence has the domain type DOM_EXPR and the type "_exprseq".

The two optional parameters min_nr and max_nr determine the minimum and maximum number of arguments of the analysed sequence, respectively. If the numbers are not be given, the number of elements of the sequence will not be checked. If only the minimum is given, the sequence must have at least min_nr elements for the test to succeed.

This type does not represent a property.


Example 1

Is the given sequence a sequence of identifiers?

testtype((a, b, c, d, e, f), Type::SequenceOf(DOM_IDENT))

Is the given sequence a sequence of at least five real numbers?

testtype((0, 0.5, 1, 1.5, 2, 2.5, 3), Type::SequenceOf(Type::Real, 5))



Any MuPAD® object


The type of the objects; a type can be an object of the library Type or one of the possible return values of domtype and type


The minimal number of objects as nonnegative integer


The maximal number of objects as nonnegative integer

Return Values

See testtype

See Also

MuPAD Functions

Was this topic helpful?