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QtScript is also good for tiny things

Sunday, 14 October 2007  |  rich

Here's a quick example of why it's nice to have a script interpreter embedded in Qt: Plasma's KRunner has a calculator which used code borrowed from the KDE 3.x minicli. The old code started up the bc command line calculator then displayed the result - not exactly an efficient way to do things. I've just committed a change that makes it use QtScript and the code is trivial:

QString CalculatorRunner::calculate( const QString& term )
    QScriptEngine eng;
    QScriptValue result = eng.evaluate( term );
    return result.toString();

This replaces 23 lines of code and is quite a bit more powerful. Nice!