how to convert list<string, list<string>> to string

# android

[Milo]

how to convert list<string, list<string>> to string

[lnunezb6]

list.toString() or list.joinToString() if you want it separated by commas

[mkrussel]

List cannot have two generics. Is that supposed to be

List<Pair<String, List<String>> and if so what is the desired output?

[Milo]

The desired output is a string with all elements by means of a line break.

[Chris Lee]

list.joinToString("\n")

[Milo]

nope
With this I am getting

Country1, [city1, city2, city3]
Country2, [city4, city5]

but I want

"Country1
city1,
city2,
city3
Country2,
city4,
city5"

[Chris Lee]

list.map { "${it.first},${it.second.joinToString("\n")}" }

[Chris Lee]

list.map { "${it.first},${it.second.joinToString(",")}\n" }

[Chris Lee]

second one puts everything on one line as CSV with a newline, if that is the desired output.

[Milo]

thanks!

[mkrussel]

list.joinToString(separator = ",\n") { "$it.first,\n${it.second.joinToString(separator = ",\n")}") }