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int checkSum(const std::vector<int>& code ) const { if ( code .size() < 8) ..... Python EAN13 check - digit calculation based on Najoua Mahi's Java ...

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Java Code Examples for org.apache.commons.validator.routines. checkdigit . ... EAN13_CHECK_DIGIT.calculate( ean13 ); ean13 += checkDigit ; return ean13 ; ...

Unicode strings are simply a series of Unicode code points. When you are converting an ASCII or UTF-8 string to Unicode, you are actually decoding it; when you are converting from Unicode to UTF-8 or ASCII, you are encoding it. This is why the error in the example said that the ASCII codec could not decode the byte 0xa3 from ASCII to Unicode. You might be used to thinking of ASCII as the natural representation of characters and anything else to be an encoding, but this is not the way you should think with Unicode. You should always think of the Unicode code point as the natural representation and anything else as being a particular encoding. The 0xa3 characters that appeared in the UnicodeDecodeError message are hex for 163, which represents the sign. The error occurred because this is outside the ASCII range. However, this character is present in the ISO 8859-1 character set. If you tell Python that the data it is decoding is encoded with the 'iso_8859_1' character set, you get the result you expected: >>> unicode(chr(163), encoding='iso_8859_1') + cost u'\xa350.00' Notice that because 163 can be represented in just two hex digits, Python chose to use the \x representation rather than its \u or \U representation of Unicode characters. Let s print the result: >>> print u'\xa350.00' 50.00 Be aware that not all terminals will be able to display all Unicode characters when printed like this; it will depend on the encoding of the terminal and the fonts available on the system.

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EAN13 . java · GitHub
import java .util.Scanner;. /**. * @version 1. * @author ChloeWake. *. */. public class EAN13 {. public static void main (String[] args){. String input = GetInput(); // get ...

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Java Code Examples for org.apache.commons.validator.routines. checkdigit . ... EAN13_CHECK_DIGIT.calculate( ean13 ); ean13 += checkDigit ; return ean13 ; ...

When the script is done, you can build Qt using the following command: make This process will take a relatively long time to complete, but after it finishes you can install Qt by using the next line: make install.

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EAN (European Article Number) check digits (administered by GS1) ... first odd position is the last digit in the code . ... that the mechanism for GTIN- 13 is the same ...

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Now that you ve seen how to decode to Unicode, let s see how to encode it. All Python Unicode objects have an encode() method that takes the encoding you want to use as its argument. It is used like this: >>> u'$50.00'.encode('utf-8') '$50.00' >>> u'$50.00'.encode('ascii') '$50.00' As you can see, u'$50.00', when encoded to UTF-8, is the same as the ASCII representation. The same cannot be said for u' 50.00' because this isn t an ASCII character, as I ve already explained: >>> u'\xa350.00'.encode('utf-8') '\xc2\xa350.00' >>> print '\xc2\xa350.00' 50.00 >>> u'\xa350.00'.encode('ascii') Traceback (most recent call last): File "<stdin>", line 1, in <module> UnicodeEncodeError: 'ascii' codec can't encode character u'\xa3' in position 0: ordinal not in range(128) Once again, you get the familiar UnicodeEncodeError, this time specifying that the encoding failed as you would expect.

The key innovation in the Bell-LaPadula model is not the idea of adding classifications to users and resources, it is the use of various rules used to guide the decisions about who is allowed to access the resources. There are three rules that guide the decisions about which users are allowed to access which files: the simple property, the star property, and the tranquility property.

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Listing 1-13. Populating a QList and printing the contents QList<QString> list; list << "foo" << "bar" << "baz";

Python supports many more character encodings besides the ones mentioned in this chapter; you can find the full list at http://docs.python.org/lib/standard-encodings.html.

foreach( QString s, list ) qDebug() << s; Listing 1-13 shows how Qt developers think lists ought to be: easy to use. Using the foreach macro shortens the code, but iterator instances are used behind the scenes. Qt offers both STL-style iterators and Java-style iterators. The code in Listing 1-14 shows how both iterators are used. The while loop at the top of the list uses the Java-style iterator QListIterator. The function hasNext checks to see whether there are any more valid items in the list, whereas the next method returns the current item and moves the iterator to the next item. If you want to look at the next item without moving the iterator, use the peekNext method. The for loop at the end of the listing uses STL-style iterators. The iterator name can be specified using either STL naming or Qt naming const_iterator and ConstIterator are synonyms, but the latter is more Qt-ified. When iterating in for loops, it is valuable to use ++iterator instead of iterator++. This gives you more efficient code because the compiler avoids having to create a temporary object for the context of the for loop. Listing 1-14. STL-style iterators and Java-style iterators side by side QList<int> list; list << 23 << 27 << 52 << 52; QListIterator<int> javaIter( list ); while( javaIter.hasNext() ) qDebug() << javaIter.next(); QList<int>::const_iterator stlIter; for( stlIter = list.begin(); stlIter != list.end(); ++stlIter ) qDebug() << (*stlIter); When comparing STL- and Java-style iterators, it is important to remember that STL-style iterators are slightly more efficient. However, the readability and code clarity provided by the Java-style iterators might be enough motivation to use them.

Figure 1-2 The Bell-LaPadula model The first rule, the simple property, states that if a user has a particular level of access, then that user is not allowed to access any information resources that have a higher classification than the user does In essence, a user that has only unclassified access will only be able to access unclassified files A user with confidential access will be able to access confidential and unclassified files, but not secret or top secret files The simple property is an intuitive rule that is very often called no read up The star property, also called the confinement property, is the second rule If a user has secret level access, then the user is not allowed to write any files or create any resources that have a lower level of access.

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JsBarcode - Barcode generator written in JavaScript - Johan Lindell
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