如何使地圖字符串作爲鍵和函數作爲scala中的值？

Question

我希望做的是這樣的：

val myMap: Map[String, => String] = Map(
    "name1" -> {//functions that does stuff to generate some string}, 
    "name2" -> {//functions that does something else to return some other string}, 
    ... 
) 

是，即使可能嗎？我將如何實現這一目標？ 我的目標是在地圖上獲取函數時進行評估。

Answer 1

你會得到最接近的是地圖[字符串，（）=>字符串]

val myMap = Map(
    "name1" -> {() => generateString() }, 
    "name2" -> {() => generateString() } 
) 

val name1 = myMap("name1")() 

你也可以創建自己的地圖，覆蓋默認功能

How to implement Map with default operation in Scala