The easiest way to convert a string to a HashMap

Question

if I have text in a string, for example:

"ABC = 123, DEF = 456, GHI = 789"

how can I create a populated object for it HashMap<String,Int>in the lightest and shortest amount of code in Kotlin?

Answer 1

I don't think the solution is simpler than this:

val s = "abc=123,def=456,ghi=789"

val map = s.split(",").associate { 
    val (left, right) = it.split("=")
    left to right.toInt() 
}

Or, if you need it HashMap, use it .associateTo(HashMap()) { ... }.

Some information:

• .associate { ... } gets a function that creates pairs, which are then stored in the map as keys and values, respectively.

• val (left, right) = it.split("=")- this is the use of destructuring declarations in the list returned from it.split("="), it takes the first two elements from the list.

• left to right.toInt() Pair<String, Int>, .