32 lines
775 B
D
32 lines
775 B
D
module observer.delivery.currentconditionsdisplay;
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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 CurrentConditionsDisplay : Observer, DisplayElement
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{
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private:
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float temperature;
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float humidity;
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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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this.temperature = temperature;
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this.humidity = humidity;
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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("Current conditions: %3.1f".format(temperature), "F degrees and %3.1f%% humidity".format(humidity));
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}
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}
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