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Questions tagged [period]

A period of time is an interval, a span of time.

444 questions
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Using a variable period in an interval in Postgres

I have a relation that maintains monthly historical data. This data is added to the table on the last day of each month. A service I am writing can then be called specifying a month and a number of months prior for which to retrieve the historical…
Belizzle
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Period to string

I'm using the Joda-Time library with Java. I'm having some difficulty trying to turn a Period object to a string in the format of "x days, x hours, x minutes". These Period objects are first created by adding an amount of seconds to them (they are…
tt
53
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5 answers

Generate a list of datetimes between an interval

Given two datetimes (start_date and end_date), I'd like to generate a list of other datetimes between these two dates, the new datetimes being separated by a variable interval. e.g. every 4 days between 2011-10-10 and 2011-12-12 or every 8 hours…
Joucks
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What does 'PT' prefix stand for in Duration?

I am trying to use the Duration class instead of long. It has superior literal syntax. I like its flexibility, though it looks weird. "PT10S" means 10 seconds, what is the problem to accept "10 seconds"?! Okay never mind. I am just curious why PT…
Daneel Yaitskov
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Run a function periodically in Scala

I want to call an arbitrary function every n seconds. Basically I want something identical to SetInterval from Javascript. How can I achieve this in Scala?
src091
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Fast Fourier Transform in R

I have a dataset with the number of hourly visits an animal made during a period of 12 months. I want to use the Fast Fourier Transform to examine cyclical patterns and periodicity. In the past, I have used Statistica for this this; however, I would…
user1626688
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How to format a Period in Java 8 / jsr310?

I'd like to format a Period using a pattern like YY years, MM months, DD days. The utilities in Java 8 are designed to format time but neither period, nor duration. There's a PeriodFormatter in Joda time. Does Java have similar utilities?
naXa
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How to handle full period in java.time?

The Period class in java.time handles only the date-oriented potion: years, months, days. What about the time portion: hours, minutes, seconds? How can we parse and generate string representations of full periods as defined in ISO 8601,…
Basil Bourque
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ASP.NET MVC: How to Route Search Term with . (Period) at the end

I get a 404 response from .Net MVC when I try to make a request where my search term ends with a . (period). This is the route that I'm using: routes.MapRoute( "Json", "Remote.mvc/{action}/{searchTerm}/{count}", …
Will
14
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1 answer

What is the meaning of ". filename" (period space filename) in Bash?

What does a command with format [period][space][filename] mean? Example: . ./setup.sh Also in the .bashrc file, we have a line like that: . "$HOME/.bashrc" What does this mean?
Muhammad Raihan Muhaimin
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Working with an array with periods in key values

I'm getting data from an array. For some reason the array has key values like [3.3] which I'm having trouble retrieving data from. I have this array [3.3] => First Name [3.6] => Last Name[2] => email@example.com. When I try to call $array[3.3] it…
Brooke.
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Java - Elegant way of parsing date/period?

From the ISO-8601 standards, there are 4 ways of expressing intervals/duration: Start and end, such as "2007-03-01T13:00:00Z/2008-05-11T15:30:00Z" Start and duration, such as "2007-03-01T13:00:00Z/P1Y2M10DT2H30M" Duration and end, such as…
aphrid
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Any way to convert a JodaTime Period to a decimal number of hours?

I have a JodaTime Period that I've created from two DateTime instants. Is there a good way to convert that Period into a decimal number of hours? For instance, I have a Period that goes from 1pm to 1:30pm on Jan 1, 2010. How can I get that Period…
jbarz
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What does the 'period' character (.) mean if used in the middle of a php string?

I'm fairly new to PHP, but I can't seem to find the solution to this question in google. Here is some example code: $headers = 'From: webmaster@example.com' . "\r\n" . 'Reply-To: webmaster@example.com' . "\r\n" . 'X-Mailer: PHP/' .…
mhz
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Perl period vs comma operator

Why does print "$str is " , ispalindrome($str) ? "" : " not" , " a palindrome\n" print "madam is a palindrome", but print "$str is " . ispalindrome($str) ? "" : " not" . " a palindrome\n" prints ""?
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