我知道Anko提供了parseSingle,parSEOpt和parseList的函数,我不明白为什么Android Developers(该书)的代码需要再次设计扩展parseList.

你可以告诉我吗？谢谢！

https://github.com/antoniolg/Kotlin-for-Android-Developers/blob/master/app/src/main/java/com/antonioleiva/weatherapp/data/db/ForecastDb.kt

override fun requestForecastByZipCode(zipCode: Long,date: Long) = forecastDbHelper.use {

        val dailyRequest = "${DayForecastTable.CITY_ID} = ? AND ${DayForecastTable.DATE} >= ?"
        val dailyForecast = select(DayForecastTable.NAME)
                .whereSimple(dailyRequest,zipCode.toString(),date.toString())
                .parseList { DayForecast(HashMap(it)) }

}

https://github.com/antoniolg/Kotlin-for-Android-Developers/blob/master/app/src/main/java/com/antonioleiva/weatherapp/extensions/DatabaseExtensions.kt

fun