46 lines
1.1 KiB
D
46 lines
1.1 KiB
D
module observer.delivery.statiscticdisplay;
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import observer.delivery.displayelement;
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import observer.delivery.observer;
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import observer.delivery.weatherdata;
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import std.stdio : writeln;
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import std.format : format;
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class StatisticsDisplay : Observer, DisplayElement
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{
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private:
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float maxTemp = 0.0f;
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float minTemp = 200;
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float tempSum= 0.0f;
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int numReadings;
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public:
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this(WeatherData weatherData)
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{
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weatherData.registerObserver(this);
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}
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override void update(float temperature, float humidity, float pressure)
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{
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tempSum += temperature;
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numReadings++;
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if (temperature > maxTemp)
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{
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maxTemp = temperature;
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}
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if (temperature < minTemp)
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{
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minTemp = temperature;
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}
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display();
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}
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override void display()
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{
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writeln("Avg/Max/Min temperature = ", (tempSum / numReadings), '/', maxTemp, '/', minTemp);
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// writeln("Avg/Max/Min temperature = ".format(temperature), "F degrees and %3.1f%% humidity".format(humidity));
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}
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}
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