strings.isDigit() function
The strings.isDigit() function tests if a single-character string is a digit (0-9).
Output data type: Boolean
import "strings"
strings.isDigit(v: "A")
// Returns false
Parameters
v
The single-character string to test.
Examples
Filter by columns with digits as values
import "strings"
data
|> filter(fn: (r) => strings.isDigit(v: r.serverRef))
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