Meteorology
10 Points
stringers
Instructions
Your team is working on a meteorology application.
They have defined an API with various types and constants representing meteorological data, see file meteorology.go.
Your task is to add suitable String methods to all types so that they implement interface Stringer.
1. Implement the Stringer interface for type TemperatureUnit
After some discussion, the team have agreed that the unit of temperature will be either Celsius or Fahrenheit.
Values should be formatted as shown in the examples below.
Make the TemperatureUnit type implement the Stringer interface by adding a String method to it.
This method must return the string "°C" if the temperature unit is Celsius or "°F" if the temperature unit is Fahrenheit.
celsiusUnit := Celsius
fahrenheitUnit := Fahrenheit
celsiusUnit.String()
// => °C
fahrenheitUnit.String()
// => °F
fmt.Sprint(celsiusUnit)
// Output: °C2. Implement the Stringer interface for type Temperature
Temperature values consist of an integer and a temperature unit. They should be formatted as in the examples below.
For that to happen, make the Temperature type implement the Stringer interface by adding a String method to it.
This method should return a string with the numeric value for the temperature and the temperature unit separated by a space: <temperature> <unit>:
celsiusTemp := Temperature{
degree: 21,
unit: Celsius,
}
celsiusTemp.String()
// => 21 °C
fmt.Sprint(celsiusTemp)
// Output: 21 °C
fahrenheitTemp := Temperature{
degree: 75,
unit: Fahrenheit,
}
fahrenheitTemp.String()
// => 75 °F
fmt.Sprint(fahrenheitTemp)
// Output: 75 °F3. Implement the Stringer interface for type SpeedUnit
After lengthy discussions, the team has agreed that the unit of wind speed will be either KmPerHour or MilesPerHour.
Values should be formatted as the examples below.
For that to happen, make the SpeedUnit type implement the Stringer interface by adding a String method to it.
This method must return the string "km/h" if the speed unit is kilometers per hour or "mph" if the speed unit is miles per hour:
mphUnit := MilesPerHour
mphUnit.String()
// => mph
fmt.Sprint(mphUnit)
// Output: mph
kmhUnit := KmPerHour
kmhUnit.String()
// => km/h
fmt.Sprint(kmhUnit)
// Output: km/h4. Implement the Stringer interface for Speed
Wind speed values consist of an integer and a speed unit. They should be formatted as in the example below.
For that to happen, make the Speed type implement the Stringer interface by adding a String method to it.
This method should return a string with the numeric value for the speed and the speed unit separated by a space: <speed> <unit>:
windSpeedNow := Speed{
magnitude: 18,
unit: KmPerHour,
}
windSpeedNow.String()
// => 18 km/h
fmt.Sprintf(windSpeedNow)
// Output: 18 km/h
windSpeedYesterday := Speed{
magnitude: 22,
unit: MilesPerHour,
}
windSpeedYesterday.String()
// => 22 mph
fmt.Sprint(windSpeedYesterday)
// Output: 22 mph5. Implement the Stringer interface for type MeteorologyData
Meteorological data specifies location, temperature, wind direction, wind speed and humidity. It should be formatted as in the example below:
For that to happen, make the MeteorologyData type implement the Stringer interface by adding a String method to it.
This method should return the meteorology data in the following format:
<location>: <temperature>, Wind <wind_direction> at <wind_speed>, <humidity>% HumiditysfData := MeteorologyData{
location: "San Francisco",
temperature: Temperature{
degree: 57,
unit: Fahrenheit
},
windDirection: "NW",
windSpeed: Speed{
magnitude: 19,
unit: MilesPerHour
},
humidity: 60
}
sfData.String()
// => San Francisco: 57 °F, Wind NW at 19 mph, 60% Humidity
fmt.Sprint(sfData)
// Output: San Francisco: 57 °F, Wind NW at 19 mph, 60% HumidityMeteorology
10 Points
stringers
Instructions
Your team is working on a meteorology application.
They have defined an API with various types and constants representing meteorological data, see file meteorology.go.
Your task is to add suitable String methods to all types so that they implement interface Stringer.
1. Implement the Stringer interface for type TemperatureUnit
After some discussion, the team have agreed that the unit of temperature will be either Celsius or Fahrenheit.
Values should be formatted as shown in the examples below.
Make the TemperatureUnit type implement the Stringer interface by adding a String method to it.
This method must return the string "°C" if the temperature unit is Celsius or "°F" if the temperature unit is Fahrenheit.
celsiusUnit := Celsius
fahrenheitUnit := Fahrenheit
celsiusUnit.String()
// => °C
fahrenheitUnit.String()
// => °F
fmt.Sprint(celsiusUnit)
// Output: °C2. Implement the Stringer interface for type Temperature
Temperature values consist of an integer and a temperature unit. They should be formatted as in the examples below.
For that to happen, make the Temperature type implement the Stringer interface by adding a String method to it.
This method should return a string with the numeric value for the temperature and the temperature unit separated by a space: <temperature> <unit>:
celsiusTemp := Temperature{
degree: 21,
unit: Celsius,
}
celsiusTemp.String()
// => 21 °C
fmt.Sprint(celsiusTemp)
// Output: 21 °C
fahrenheitTemp := Temperature{
degree: 75,
unit: Fahrenheit,
}
fahrenheitTemp.String()
// => 75 °F
fmt.Sprint(fahrenheitTemp)
// Output: 75 °F3. Implement the Stringer interface for type SpeedUnit
After lengthy discussions, the team has agreed that the unit of wind speed will be either KmPerHour or MilesPerHour.
Values should be formatted as the examples below.
For that to happen, make the SpeedUnit type implement the Stringer interface by adding a String method to it.
This method must return the string "km/h" if the speed unit is kilometers per hour or "mph" if the speed unit is miles per hour:
mphUnit := MilesPerHour
mphUnit.String()
// => mph
fmt.Sprint(mphUnit)
// Output: mph
kmhUnit := KmPerHour
kmhUnit.String()
// => km/h
fmt.Sprint(kmhUnit)
// Output: km/h4. Implement the Stringer interface for Speed
Wind speed values consist of an integer and a speed unit. They should be formatted as in the example below.
For that to happen, make the Speed type implement the Stringer interface by adding a String method to it.
This method should return a string with the numeric value for the speed and the speed unit separated by a space: <speed> <unit>:
windSpeedNow := Speed{
magnitude: 18,
unit: KmPerHour,
}
windSpeedNow.String()
// => 18 km/h
fmt.Sprintf(windSpeedNow)
// Output: 18 km/h
windSpeedYesterday := Speed{
magnitude: 22,
unit: MilesPerHour,
}
windSpeedYesterday.String()
// => 22 mph
fmt.Sprint(windSpeedYesterday)
// Output: 22 mph5. Implement the Stringer interface for type MeteorologyData
Meteorological data specifies location, temperature, wind direction, wind speed and humidity. It should be formatted as in the example below:
For that to happen, make the MeteorologyData type implement the Stringer interface by adding a String method to it.
This method should return the meteorology data in the following format:
<location>: <temperature>, Wind <wind_direction> at <wind_speed>, <humidity>% HumiditysfData := MeteorologyData{
location: "San Francisco",
temperature: Temperature{
degree: 57,
unit: Fahrenheit
},
windDirection: "NW",
windSpeed: Speed{
magnitude: 19,
unit: MilesPerHour
},
humidity: 60
}
sfData.String()
// => San Francisco: 57 °F, Wind NW at 19 mph, 60% Humidity
fmt.Sprint(sfData)
// Output: San Francisco: 57 °F, Wind NW at 19 mph, 60% Humidity