#isdigit()

DESCRIPTION
    returns TRUE if a character, or first character in a string, is a digit (number)

SYNOPSIS
    #isdigit(s)

ARGUMENTS
    s - a quoted string, or string expression

EXAMPLES

# pikt +C 'output $text(#isdigit("a"))'
0

# pikt +C 'output $text(#isdigit("A"))'
0

# pikt +C 'output $text(#isdigit("9"))'
1

# pikt +C 'output $text(#isdigit("!"))'
0

# pikt +C 'output $text(#isdigit(" "))'
0

# pikt +C 'output $text(#isdigit($char(3)))'
0

# pikt +C 'output $text(#isdigit("is this a digit?"))'
0

SEE ALSO
    #isalnum()
    #isalpha()
    #iscntrl()
    #isgraph()
    #islower()
    #isprint()
    #ispunct()
    #isspace()
    #isupper()

    Numerical Functions
    String Functions