Provided by: systemtap-doc_2.3-1ubuntu1.4_all bug

NAME
       function::isdigit - Checks for a digit


SYNOPSIS
           isdigit:long(str:string)


ARGUMENTS
       str
           string to check


DESCRIPTION
       Checks for a digit (0 through 9) as the first character of a string. Returns non-zero if
       true, and a zero if false.