#isalnum()

DESCRIPTION
    returns TRUE if a character, or first character in a string, is alphanumeric

SYNOPSIS
    #isalnum(s)

ARGUMENTS
    s - a quoted string, or string expression

EXAMPLES

# pikt +C 'output $text(#isalnum("a"))'
1

# pikt +C 'output $text(#isalnum("A"))'
1

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

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

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

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

# pikt +C 'output $text(#isalnum("is this alphanumeric?"))'
1

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

    Numerical Functions
    String Functions