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tuple_is_numbertuple_is_numberTupleIsNumbertuple_is_numberTupleIsNumberTupleIsNumber (Operator)

Name

tuple_is_numbertuple_is_numberTupleIsNumbertuple_is_numberTupleIsNumberTupleIsNumber — Check a tuple (of strings) whether it represents numbers.

Signature

tuple_is_number( : : T : IsNumber)

Herror tuple_is_number(double T, Hlong* IsNumber)

Herror T_tuple_is_number(const Htuple T, Htuple* IsNumber)

Herror tuple_is_number(const HTuple& T, Hlong* IsNumber)

Herror tuple_is_number(const HTuple& T, HTuple* IsNumber)

void TupleIsNumber(const HTuple& T, HTuple* IsNumber)

HTuple HTuple::TupleIsNumber() const

void HOperatorSetX.TupleIsNumber(
[in] VARIANT T, [out] VARIANT* IsNumber)

VARIANT HTupleX.TupleIsNumber([in] VARIANT T)

static void HOperatorSet.TupleIsNumber(HTuple t, out HTuple isNumber)

HTuple HTuple.TupleIsNumber()

Description

tuple_is_numbertuple_is_numberTupleIsNumbertuple_is_numberTupleIsNumberTupleIsNumber checks each element of the input tuple TTTTTt whether it represents a number. If the element is a number (real or integer), 1 is returned for that element. If the element is a string, it is checked whether the string represents a number. If so, 1 is returned, otherwise 0.

Exception: Empty input tuple

If the input tuple is empty, the operator returns an empty tuple.

HDevelop In-line Operation

HDevelop provides an in-line operation for tuple_is_numbertuple_is_numberTupleIsNumbertuple_is_numberTupleIsNumberTupleIsNumber, which can be used in an expression in the following syntax:

IsNumber := is_number(T)

Parallelization

Parameters

TTTTTt (input_control)  number(-array) HTupleHTupleHTupleVARIANTHtuple (real / integer / string) (double / int / long / string) (double / Hlong / HString) (double / Hlong / char*) (double / Hlong / BSTR) (double / Hlong / char*)

Input tuple.

IsNumberIsNumberIsNumberIsNumberIsNumberisNumber (output_control)  integer(-array) HTupleHTupleHTupleVARIANTHtuple (integer) (int / long) (Hlong) (Hlong) (Hlong) (Hlong)

Tuple with boolean numbers.

Alternatives

tuple_is_inttuple_is_intTupleIsInttuple_is_intTupleIsIntTupleIsInt, tuple_is_realtuple_is_realTupleIsRealtuple_is_realTupleIsRealTupleIsReal, tuple_typetuple_typeTupleTypetuple_typeTupleTypeTupleType

See also

tuple_numbertuple_numberTupleNumbertuple_numberTupleNumberTupleNumber

Module

Foundation


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