Time

On this page you find the documentation for the class Time.

Introduction

You can use the Time class to create an object that represents a specific point in time.

Creating a new Time object

To create a new Time object, simply write Time. This way, you obtain a Time object representing the time 0001-01-01 00:00:00. Below you can see the names for the different parts a Time object consists of.

        Date     Clock
     ┣━━━━━━━━┫ ┣━━━━━━┫
     0001-01-01 00:00:00.000
     ┣━━┛ ┣┛ ┣┛ ┗┫ ┗┫ ┗┫ ┗━┫
 Year┛    ┃  ┃   ┃  ┃  ┃   ┗Millisecond
     Month┛  ┃   ┃  ┃  ┗Second
          Day┛   ┃  ┗Minute
                 ┗Hour

Often, you want to obtain the time that happen to be when your code is running. Call the method setNow() on your Time object to change the time in it to the time that happened to be when the computer calls setNow().

Retrieving parts from a Time object

Use the different getXXX() methods on the Time object to retrieve the different parts. The methods getDate() and getClock() returns a string, the other ones return a number.

• getDate() returns the date parts of the time (year, month and day of month) as a string
• getClock() returns the clock parts (hour, minute and second) of the time as a string
• getYear() returns the year
• getMonth() returns the month
• getDay() returns the day
• getHour() returns the hour
• getMinute() returns the minute
• getSecond() returns the second
• getMillisecond() returns the millisecond

class StartPage extends Page{
	
	time = Time.setNow()
	
	onBefore(){
		p.time.setNow()
	}
	
	createGui(){
		return Rows.children(
			Space,
			Text.text(`getDate(): ${p.time.getDate()}`),
			Text.text(`getYear(): ${p.time.getYear()}`),
			Text.text(`getMonth(): ${p.time.getMonth()}`),
			Text.text(`getDay(): ${p.time.getDay()}`),
			Text.text(`getClock(): ${p.time.getClock()}`),
			Text.text(`getHour(): ${p.time.getHour()}`),
			Text.text(`getMinute(): ${p.time.getMinute()}`),
			Text.text(`getSecond(): ${p.time.getSecond()}`),
			Text.text(`getMillisecond(): ${p.time.getMillisecond()}`),
			Space,
			Button.text(`Refresh`),
		)
	}
	
}

Setting a Time object

Use the different setXXX() methods on the Time object to change which time it should represent. All setXXX() methods return the Time object itself, so method calls are chainable, just as they are for GUI components. For the methods that need numbers from you (such as which year to set the date to), pass them as arguments.

• setNow() populates the time object with the time that happen to be when the call to setNow() is executed by the computer
• setDate() sets the year, month and day of month
• setClock() sets the hour, minute and second
• setYear() sets the year
• setMonth() sets the month
• setDay() sets the day of month
• setHour() sets the hour
• setMinute() sets the minute
• setSecond() sets the second
• setMillisecond() sets the millisecond

class StartPage extends Page{
	
	time = Time.setClock(5, 6, 7).setYear(2000)
	
	createGui(){
		return Rows.children(
			Space,
			Text.text(`getDate(): ${p.time.getDate()}`),
			Text.text(`getClock(): ${p.time.getClock()}`),
			Space,
		)
	}
	
}

Changing a Time object

There are also several addXXX() methods available to add seconds, minutes, hours, etc. to the Time object:

• addMilliseconds() to add a some number of milliseconds to the Time object
• addSeconds() to add a some number of seconds to the Time object
• addMinutes() to add a some number of minutes to the Time object
• addHours() to add a some number of hours to the Time object
• addDays() to add a some number of days to the Time object
• addMonths() to add a some number of months to the Time object
• addYears() to add a some number of years to the Time object

class StartPage extends Page{
	
	yesterday = Time.setNow().addDays(-1)
	today = Time.setNow()
	tomorrow = Time.setNow().addDays(1)
	
	createGui(){
		return Rows.children(
			Space,
			Text.text(`Yesterday is: ${p.yesterday.getDate()}`),
			Text.text(`Today is: ${p.today.getDate()}`),
			Text.text(`Tomorrow is: ${p.tomorrow.getDate()}`),
			Space,
		)
	}
	
}

getCopy() - Obtaining a copy

Call the method getCopy() to get back a new Time object representing the same time as the one in the Time object you called the method on.

class StartPage extends Page{
	
	original = Time.setNow()
	copy = null
	notCopy = null
	
	onBefore(){
		
		// We store a copy of the time object in "copy".
		p.copy = p.original.getCopy()
		
		// So changes to "copy" only affects that time
		// object.
		p.copy.setYear(1000)
		
		// Here we don't create a copy, so both "notCopy"
		// and "original" refers to one and the same time
		// object!
		p.notCopy = p.original
		
		// So if we change the time object through the
		// "notCopy" variable, the changes will also be
		// shown through the "original" variable!
		p.notCopy.setYear(2000)
		
	}
	
	createGui(){
		return Rows.children(
			Space,
			Text.text(`original: ${p.original.getDate()}`),
			Text.text(`copy: ${p.copy.getDate()}`),
			Text.text(`notCopy: ${p.notCopy.getDate()}`),
			Space,
		)
	}
	
}

Comparing Time objects

Use the different isXXX() methods to compare different Time objects:

• timeA.isSameAs(timeB) to check if the Time object timeA represents the same point in time as the time object timeB
• timeA.isBefore(timeB) to check if the Time object timeA represents a point in time that happens before the point in time represented by Time object timeB
• timeA.isBeforeOrSameAs(timeB) to check if the Time object timeA represents a point in time time that happens before or at the same time the point in time represented by the Time object timeB

class StartPage extends Page{
	
	timeA = Time.setDate(2023, 12, 17)
	timeB = Time.setDate(2023, 12, 17)
	timeC = Time.setDate(2023, 12, 18)
	
	createGui(){
		return Rows.children(
			Space,
			Text.text(`timeA.isSameAs(timeB): ${p.timeA.isSameAs(p.timeB)}`),
			Text.text(`timeA.isSameAs(timeC): ${p.timeA.isSameAs(p.timeC)}`),
			Space,
			Text.text(`timeA.isBefore(timeB): ${p.timeA.isBefore(p.timeB)}`),
			Text.text(`timeA.isBefore(timeC): ${p.timeA.isBefore(p.timeC)}`),
			Space,
			Text.text(`timeA.isBeforeOrSameAs(timeB): ${p.timeA.isBeforeOrSameAs(p.timeB)}`),
			Text.text(`timeA.isBeforeOrSameAs(timeC): ${p.timeA.isBeforeOrSameAs(p.timeC)}`),
			Space,
		)
	}
	
}

getDurationTo() - Getting the duration between times

Use the method getDurationTo() to obtain a Duration object representing the amount of time between two Time objects (pass the other Time object as argument).

class StartPage extends Page{
	
	createGui(){
		
		const eventStartTime = Time.setNow()
		const eventStopTime = Time.setNow().addHours(1).addMinutes(90)
		
		const eventDuration = eventStartTime.getDurationTo(eventStopTime)
		
		return Rows.children(
			Text.text(`The event lasts ${eventDuration.getAsString()}.`),
		)
		
	}
	
}