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    <p>What you are doing is very similar to Localization (AKA L10N).</p> <p>There are a couple of questions on this: <a href="https://stackoverflow.com/q/185291/14065">Best way to design for localization of strings</a></p> <p>But there are several packages that already deal with this.<br> These are basically designed to take all the strings from your application and package them in a separate resource (the correct resource (depending usually on locale) is selected at runtime). But they usually use the "English" (or should I say original text for non English programers) as the look-up text to find the correct resource string (thus the code is still readable to the developer) and the user gets a language specific string displayed.</p> <p>Of course boost also has one</p> <ul> <li><a href="http://www.boost.org/doc/libs/1_49_0/libs/locale/doc/" rel="nofollow noreferrer">boost::localization</a></li> </ul> <p>But there are others (A quick google finds)</p> <ul> <li>GNU <a href="http://www.gnu.org/software/gettext/" rel="nofollow noreferrer">gettext</a></li> <li>GNU <a href="http://www.gnu.org/software/libiconv/" rel="nofollow noreferrer">libiconv</a></li> </ul> <p>Othere resources:</p> <ul> <li><a href="http://en.wikipedia.org/wiki/GNU_gettext" rel="nofollow noreferrer">http://en.wikipedia.org/wiki/GNU_gettext</a></li> <li><a href="http://site.icu-project.org/" rel="nofollow noreferrer">http://site.icu-project.org/</a></li> </ul> <p>But getting the correct string is only half the battle. Then you need to correctly swap run-time values with place holders in the string. Personally this is where I think <a href="http://www.boost.org/doc/libs/1_49_0/libs/format/" rel="nofollow noreferrer">boost::format</a> really shines.</p> <p>Example:</p> <pre><code>sprintf("The time is %s in %s.", time, country); </code></pre> <p>The trouble is the order of nouns and verbs differ across languages. For example if we translate</p> <blockquote> <p>"The time is 12:00 in Germany."</p> </blockquote> <p>into Azerbaijani</p> <blockquote> <p>"Saat Almaniya saat 12:00 deyil."</p> </blockquote> <p>You will notice that the word for "Germany" (Almaniya) swaps places with the time. Thus the simple task of replacing items in a specific order does not work. What you need are indexed placeholders. (boost::format to the rescue).</p> <pre><code>std::cout &lt;&lt; boost::formt("The time is %1 in %2.") &lt;&lt; time &lt;&lt; country; // Notice the place holders are number '%1' means the first bound argument // But the format string allows you to place them in any order in the string // So your localized resource will look like this: std::cout &lt;&lt; boost::formt("Saat %2 saat %1 deyil.") % time % country; </code></pre> <p>Or more likely:</p> <pre><code>std::cout &lt;&lt; boost::formt(I10N.get("The time is %1 in %2.")) % time % country; </code></pre>
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    1. USMartin York
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    1. COIt doesn't look like localization to me. (In practice, for anything dealing with real native language messages, localization means a different DLL per language, in order to handle things like plurals, gender, etc. correctly.)
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      1. USJames Kanze
    2. CO@JamesKanze: Looks like localization to me: `transaction_messages[]`. Where the displayed text varies at run-time but the look-up index is a compile time constant. But yes. When dealing with localization the string need to be packaged into their own resources (DLL in your terms). If on the other hand the OP is just trying for a more compact way to format his output (I could read it this way) the second half of my answer covers that.
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      1. USMartin York
    3. COI don't see any different languages, which would be typical of internationalization. Nor anything dealing with gender, number or any of the other issues you encounter in internationalization. It looks to me like he's generating a message according to a transaction type.
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