Value types

Mathematical apparatus implemented in the calculation process D2000 Calc (eval tags) and in process D2000 Event Handler (events) operates with these basic value types:

• Boolean - logical type
• Integer - integer (cardinal) type
• Real - real type
• Absolute time
• Time interval (relative time)
• Text
• HBJ - reference to object

Boolean type

Values of Boolean type are labelled by the predefined identifiers @TRUE and @FALSE.

Integer type

Value range of Integer type is -2147483648 .. 2147483647.

Real type

Value range of Real type is 2.3x10308 ≤ |x| ≤ 1.7x10308 and zero value (0).

Absolute time type

The forms of values of Absolute time type are hh:mm:ss DD-MM-YYYY or hh:mm:ss DD-MM-YY

• hh - hour,
• mm - minute,
• ss - second,
• DD - day,
• MM - month,
• YYYY or YY - year

Time interval (relative time) type

The form of values of Relative time type is DDD hh:mm:ss

• DDD - number of days,
• hh - hours,
• mm - minute
• ss - second.

Time interval may be also expressed by a real number as number of seconds.

Text type

Value of Text type represents a sequence of characters with the maximal length of 2500 symbols enclosed in the quotes (e.g. "text" or 'text'). To display the characters " or ' in a value of Text type, use the character twice (e.g. "text:""hallo""" or 'text:''hallo''').
In case, that a text value exceeds this limit, the system "trims" it automatically to 2500 characters and assigns the attribute s_val_Weak (Weak) to the value.

HBJ type

Value containing an internal identifier of D2000 system, that uniquely determines an object. It is used in some special cases. It is compatible with Integer type.