Most idiomatic way to convert a Float value to a string without a decimal point in Kotlin-CodePudding

I'd like to convert a Float value to a String, but without a decimal point. For example, for the following code:

fun toDecimalString(value: Float): String {
     // TODO
}

fun main() {
    println("Result: ${toDecimalString(1.0f)}") 
    println("Result: ${toDecimalString(1.999999f)}")
    println("Result: ${toDecimalString(20.5f)}")
}

I'd like the expected output to be:

1
1
20

CodePudding user response：

As @Tenfour04 said, the answer is to first convert to an integer, by using .toInt(), which only leaves the digits left of the decimal point, and then convert to string using .toString().

.toInt().toString()

CodePudding user response：

By converting to an Int before turning the input to a string, all decimal point values are dropped, e.g.:

fun toDecimalString(value: Float): String = "${value.toInt()}"