Technical Articles > Using Formulas in Table Cells
A constant is a non-varying value that can be part of a formula. TX Text Control supports five different types of constants: Numerical, logical, string, error and array constants.
Numerical constant:
A numerical constant can be an integer (e.g. 4), a decimal number (e.g. 3.937) or a number in engineering notation (e.g. 5e4). Furthermore, a numerical constant can be combined with a prefixed minus (e.g. -7.6) sign.
| Formula | Result | |
| 9+7 | 16 | |
| 4*5.5 | 22 | |
| 4*3e5 | 1200000 | |
| -9+7 | -2 |
Logical constant:
Two logical constants are provided: TRUE and FALSE.
| Formula | Result | |
| 15>7=TRUE | TRUE | |
| 15>7=FALSE | FALSE |
String constant:
A string constant is a concatenation of characters surrounded by double quotes.
| Formula | Result | |
| "TX"&"Text"&"Control" | TXTextControl | |
| "Two"="One" | FALSE | |
| "FALSE"="FALSE" | TRUE |
Array constant:
An array constant represent a matrix of numerical, logical or/and string constants. The constants of each row in this array are separated by commas. Rows by semicolons. The array constant itself is surrounded by braces.
| Formula | Result | |
| SUM(10,{1,2,3;4,5}) | 25 |