I saw the output...

C is An unsigned char (octet,8bit) value.
W An unsigned char value (can be greater than 255).

So, why "C" values could become greater than 255?

#unpack "C*", $unicode_string.$unicode_string;
#("UNSIGNED OCTETS(C*) ", 12354, 12354)

this seems strange...

Do you mean my example should use "W" for unpack? If so, Does this make sense? The result is same with my machine. My point is, @bytes is not bytes, it is decimal code points for "HIRAGANA LETTER A". 

    $code_point=0x3042;#HIRAGANA LETTER A
    $unicode_string=pack('U*', $code_point);
    @bytes=unpack("W*", $unicode_string);
    print join('|', @bytes), "\n";  #==>these are not bytes ,but array
+ of codepoints


    $code_point=0x3042;#HIRAGANA LETTER A
    $unicode_string=pack('U*', $code_point);
    @bytes=map{ sprintf("%X",$_) } unpack("W*", Encode::encode('utf8',
+$unicode_string));
    print join('|', @bytes), "\n";

[download]
I really should read packtut.
I am waiting for your replay.

update:
I met description of perlunicode:

" pack("C") and unpack("C") are methods for emulating byte-oriented chr() and ord() on Unicode strings. While these methods reveal the internal encoding of Unicode strings, that is not something one normally needs to care about at all."
so, I think 
# this is wrong
@bytes=unpack("C*", $unicode_string); 

# this is right
@byets= unpack("C*", Encode::encode('utf8',$unicode_string));

[download]
doesn't it ?

In reply to Re^4: Example of perluniintro by remiah
in thread Example of perluniintro by remiah

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