Last Friday of each month: Difference between revisions
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ENDDEFINE
</lang>
=={{header|Wren}}==
{{libheader|Wren-date}}
<lang ecmascript>import "os" for Process
import "/date3" for Date
var args = Process.arguments
if (args.count != 1) {
Fiber.abort("Please pass just the year to be processed.")
}
var year = Num.fromString(args[0])
System.print("The dates of the last Fridays in the month for %(year) are:")
Date.default = Date.isoDate
for (m in 1..12) {
var d = Date.monthLength(year, m)
var dt = Date.new(year, m, d)
var wd = dt.dayOfWeek
if (wd == 5) {
System.print(dt)
} else if (wd > 5) {
System.print(dt.addDays(-wd + 5))
} else {
System.print(dt.addDays(-wd - 2))
}
}</lang>
{{out}}
<pre>
$ wren last_friday.wren 2012
The dates of the last Fridays in the month for 2012 are:
2012-01-27
2012-02-24
2012-03-30
2012-04-27
2012-05-25
2012-06-29
2012-07-27
2012-08-31
2012-09-28
2012-10-26
2012-11-30
2012-12-28
$ wren last_friday.wren 2020
The dates of the last Fridays in the month for 2020 are:
2020-01-31
2020-02-28
2020-03-27
2020-04-24
2020-05-29
2020-06-26
2020-07-31
2020-08-28
2020-09-25
2020-10-30
2020-11-27
2020-12-25
</pre>
=={{header|XPL0}}==
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