Большинство разработчиков ruby знают, как сэкономить несколько нажатий клавиш, сделав что-то вроде этого:
array.map(&:methodname)
а не
array.map {|x| x.methodname }
Можно ли применить аналогичный метод &: methodname для вызова методов (значений, называемых через ключи) в массиве хэшей?
В моем случае его результаты JSON api возвращаются партиями из 60 в виде массивов хешей, происходящих из JSON. Я попытался сделать это, но не удалось:
array.map(&:"keyname")
но не удалось, выбросив NoMethodError и сказав, что нет метода "keyname" для Hash, что разумно, я думаю. Мне интересно, есть ли какая-то волшебная пуля для эмуляции этой &:...
ярлыка для хэшей, которые уже разработали рубины.
Здесь один из реальных ответов JSON, ограниченный 5 результатами, я думаю,
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