is-number
function
The is-number
action checks to see if value is a number. It belongs to the logicfn category within the system area.
Action Syntax
is-number $variable
A variable name starting with $
Return Value
This function returns a
BOOLEAN
value that can be stored in a variable:
$result = is-number
Valid sizes
tiny
small
medium
large
extra
Examples
// Basic Usage
$boolean = is-number $varname
Action code: 4288393140
Version: 0.6.4-15
Last updated: 2025-06-13