Creating implementation for idiom 342 : Leap year?

Idiom

# 342 Leap year?

Created by

Lead paragraph

Determine if the current year is a leap year.

New implementation

Language

Imports

Code

Documentation URL

Original attribution URL

Online runnable demo

Username

Be concise.

Be useful.

All contributions dictatorially edited by webmasters to match personal tastes.

Please do not paste any copyright violating material.

Please try to avoid dependencies to third-party libraries and frameworks.

Other implementations

final thisYear = DateTime.now().year;
final isLeap = DateTime(year, 2, 29).month == 2;

import static java.lang.Integer.parseInt;
import static java.lang.System.currentTimeMillis;

int y = parseInt("%tY".formatted(currentTimeMillis()));
boolean b = y % 4 == 0 && (y % 100 != 0 || y % 400 == 0);

import java.time.Year;

boolean b = Year.now().isLeap();

SysUtils

if IsLeapYear(SomeYear) then writeln('SomeYear is a leap year')

import calendar
import datetime

if calendar.isleap(datetime.date.today().year):
    print('This year is a leap year.')

from datetime import date

y = date.today().year
b = not y % 4 and bool(y % 100 or not y % 400)

require 'date'

Date.leap?( Date.today.year )

let leap_year = year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);