Data Types¶
The data for a process is described up front. The data description can be easily evolved over the process life. The VOR Stream system supports the following data types:
- num (double precision floating point)
- date
- datetime
- char (variable length strings - no practical limit to length)
- array (double precision floating point)
- bool – e.g., true, false, yes, no, 1, 0
- int
Tip
Need to convert data types? See the
data type conversions page for documentation on
using the types package to convert between data types.
The following table details variable types:
| Type | Description | Example CSV form |
|---|---|---|
| num | This is a double precision floating point (64 bit) value. | 1.5e-15, 22, NaN |
| char | This is a variable length string of reasonable length. | “I am a character string” |
| bool | A Boolean variable is either true or false. | T, F, true, false, 0, 1 |
| date | A date variable represented as days since the Epoch. In input files, dates should be in ISO 8601 or RFC 3339 date format (YYYY-MM-DD) although many other formats are parsed. The sequence is always day, month, then year or year, month, day. | 1985/04/01, 2020-01-01, 01mar1970 |
| datetime | This is a datetime variable. Times are assumed to be UTC unless otherwise specified. | 1994-11-05T13:15:30Z |
| int | This is a 64 bit signed integer. | -32,764 |
| array | There are two kinds; static and dynamic. A static array is a double precision floating point array of fixed length – arraylen. In input and output tables they are represented by sequentially named variable with numeric suffixes starting from 0 to arraylen-1. A dynamic array is a double precision floating point array of dynamic length. arraylen is set to -1. In input and output tables they are represented by a single column with comma separated values enclosed in quotes. |
myarry0, myarry1, myarry3 or 3.1415, 63, -200.1 , "10.5,9.5,4.5,3.5,0,1,2,3,4,5,6,7,8,9" |