tuple_chrt — Convert a tuple of integer numbers into strings.
tuple_chrt converts the input tuple T, consisting of integer numbers, into a tuple of strings and integer numbers (where only the number 0 can occur in the output), the characters of which have the ASCII code of the corresponding input number (as long as the characters are part of the ASCII standard, for other characters please note the influence of the used character encoding table, as is touched in Tuple / String Operations). The operator tries to pack as many of the input numbers into one string as possible. Only if the value 0 occurs in T the current string is terminated at this point, the integer number 0 is inserted into the output, and a new string with the remaining input values is started. This operator can be used to convert data read with read_serial into strings. With this mechanism it is possible to read bytes with the value 0.
If the input tuple is empty, the operator returns an empty tuple.
HDevelop provides an in-line operation for tuple_chrt, which can be used in an expression in the following syntax:
Chrt := chrt(T)
Input tuple with integer numbers.
Restriction: 0 <= T <= 255
Output tuple with strings that are separated by the integer number 0.
read_serial (SerialHandle, 100, Data) tuple_chrt (Data, Strings)
tuple_ord, tuple_ords, read_serial