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Fix return type of forecastInFahrenheit #970

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Merged
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Jan 9, 2018
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Fix return type of forecastInFahrenheit #970

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2 changes: 1 addition & 1 deletion _tour/higher-order-functions.md
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,7 @@ case class WeeklyWeatherForecast(temperatures: Seq[Double]) {

private def convertCtoF(temp: Double) = temp * 1.8 + 32

def forecastInFahrenheit: Double = temperatures.map(convertCtoF) // <-- passing the method convertCtoF
def forecastInFahrenheit: Seq[Double] = temperatures.map(convertCtoF) // <-- passing the method convertCtoF
}
```
Here the method `convertCtoF` is passed to forecastInFahrenheit This is possible because the compiler coerces `convertCtoF` to the function `x => convertCtoF(x)` (note: `x` will
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