CODEWITHSUNDEEP
kotlin
양기열
양기열

Reputation: 39

Kotlin java String.format array value set

I want this code refactoring. if size == 5... i don't want add code. just use for loop or stream or other solution as size args set.

private fun formatTest(args: List<String>): String {
    var size = args?.size
    return when {
        size == 1 -> java.lang.String.format(code.message, args[0])
        size == 2 -> java.lang.String.format(code.message, args[0], args[1])
        size == 3 -> java.lang.String.format(code.message, args[0], args[1], args[2])
        size == 4 -> java.lang.String.format(code.message, args[0], args[1], args[2], args[3])
        else -> java.lang.String.format(code.message)
    }
}

Upvotes: 2

Views: 586

Answers (1)

Sweeper
Sweeper

Reputation: 273380

First, convert the list to an array, then use the * operator to "spread" the array into the varargs.

private fun formatTest(args: List<String>) =
    if (args.size < 5) {
        String.format(code.message, *args.toTypedArray())
    } else {
        code.message
    }

Upvotes: 4

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