Dec
DataWindow expression function
Description
Converts the value of a string to a decimal.
Syntax
|
1 |
Dec ( string ) |
|
Argument |
Description |
|---|---|
|
string |
The string you want returned as a |
Return value
Decimal. Returns the contents of string as a decimal if it succeeds
and 0 if string is not a number.
Usage
The decimal datatype supports up to 28 digits.
You can also append the letter D in upper or lowercase to identify a
number as a decimal constant in DataWindow expressions. For example,
2.0d and 123.456789012345678901D are treated as decimals.
Examples
This expression returns the string 24.3 as a decimal
datatype:
|
1 |
Dec("24.3") |
This expression for a computed field returns “Not a valid score” if
the string in the score column does not contain a number. The expression
checks whether the Dec function returns 0, which means it failed to
convert the value:
|
1 |
If ( Dec(score) <> 0, score, "Not a valid score") |
This expression returns 0:
|
1 |
Dec("3ABC") // 3ABC is not a number |
This validation rule checks that the value in the column the user
entered is greater than 1999.99:
|
1 |
Dec(GetText()) > 1999.99 |
This validation rule for the column named score insures that score
contains a string:
|
1 |
Dec(score) <> 0 |
See also
Dec in the section called “Dec” in PowerScript Reference