Kotlin Duration inWholeHours Function

The inWholeHours function in Kotlin is used to convert a Duration object to the number of whole hours it represents. It is part of the Kotlin standard library’s kotlin.time package and provides a way to extract the number of complete hours from a duration.

Table of Contents

1. Introduction
2. inWholeHours Function Syntax
3. Understanding inWholeHours
4. Examples
   • Basic Usage
   • Converting Different Duration Units to Whole Hours
   • Using inWholeHours with Conditional Logic
   • Chaining inWholeHours with Other Functions
5. Real-World Use Case
6. Conclusion

Introduction

The inWholeHours function allows you to convert a Duration object to a Long representing the number of whole hours it encompasses. This is useful for scenarios where you need to calculate the number of complete hours within a given duration.

inWholeHours Function Syntax

The syntax for the inWholeHours function is as follows:

val inWholeHours: Long

Returns:

• A Long value representing the number of whole hours in the duration.

Understanding inWholeHours

The inWholeHours function works by converting the specified Duration object to a Long value representing the number of whole hours. This function can be useful when you need to extract the hour component from a larger duration.

Examples

Basic Usage

To demonstrate the basic usage of inWholeHours, we will create a Duration object and convert it to the number of whole hours.

Example

import kotlin.time.Duration
import kotlin.time.Duration.Companion.hours
import kotlin.time.Duration.Companion.minutes

fun main() {
    val duration = 5.hours + 30.minutes
    val wholeHours = duration.inWholeHours
    println("Whole hours: $wholeHours")
}

Output:

Whole hours: 5

Converting Different Duration Units to Whole Hours

This example shows how to convert various durations to whole hours.

Example

import kotlin.time.Duration
import kotlin.time.Duration.Companion.days
import kotlin.time.Duration.Companion.minutes

fun main() {
    val duration1 = 1.days
    val duration2 = 150.minutes
    println("Whole hours in duration1: ${duration1.inWholeHours}")
    println("Whole hours in duration2: ${duration2.inWholeHours}")
}

Output:

Whole hours in duration1: 24
Whole hours in duration2: 2

Using inWholeHours with Conditional Logic

This example shows how to use inWholeHours in a conditional context.

Example

import kotlin.time.Duration
import kotlin.time.Duration.Companion.hours

fun main() {
    val duration = 50.hours
    if (duration.inWholeHours > 24) {
        println("The duration spans more than one day.")
    } else {
        println("The duration is within a single day.")
    }
}

Output:

The duration spans more than one day.

Chaining inWholeHours with Other Functions

The inWholeHours function can be chained with other duration functions to perform more complex operations.

Example

import kotlin.time.Duration
import kotlin.time.Duration.Companion.days
import kotlin.time.Duration.Companion.hours

fun main() {
    val duration = (2.days + 5.hours) - 30.hours
    println("Whole hours in the resulting duration: ${duration.inWholeHours}")
}

Output:

Whole hours in the resulting duration: 23

Real-World Use Case

Calculating Work Hours

In real-world applications, the inWholeHours function can be used to calculate the number of whole work hours based on a given duration.

Example

import kotlin.time.Duration
import kotlin.time.Duration.Companion.hours
import kotlin.time.Duration.Companion.minutes

fun main() {
    val workDuration = 40.hours + 45.minutes
    val workHours = workDuration.inWholeHours
    println("Total whole work hours: $workHours")
}

Output:

Total whole work hours: 40

Conclusion

The inWholeHours function in Kotlin provides a convenient way to convert Duration objects to the number of whole hours they represent. By understanding and using the inWholeHours function, you can efficiently manage and manipulate duration values in your Kotlin applications, ensuring that you can handle time-related operations according to your requirements.