Create CSV from a Kotlin List

!CsvFromListMain.kt

fun main() {
    val firstCategory = Category(0, "Phone")
    val secondCategory = Category(1, "Laptop")
    val categories = listOf(firstCategory, secondCategory)
    val csv = csvOf(
        listOf("id", "name"),
        categories
    ) {
        listOf(it.id.toString(), it.name)
    }
    println(csv)
}

Category.kt

data class Category(
    val id: String,
    val name: String,
)

CsvUtil.kt

fun <T> csvOf(
    headers: List<String>,
    data: List<T>,
    itemBuilder: (T) -> List<String>
) = buildString {
    append(headers.joinToString(",") { "\"$it\"" })
    append("\n")
    data.forEach { item ->
        append(itemBuilder(item).joinToString(",") { "\"$it\"" })
        append("\n")
    }
}