intervals

问题 i just want to use $interval(anyFunction(){}, 1000); But value of 1000 should be variable, too. If i change it by defining a variable, the interval won't change on the view. Could someone post an example how to update the 'speed' of an $interval? Thank you very much. Just in case: my controller: $scope.food = 0; var stop; var farmInterval = 1000; $scope.startFarming = function () { console.log('farming started...'); if (angular.isDefined(stop)) return; stop = $interval(function () { $scope

问题 I've been thinking on how I can simplify the problem presented here. Complex MySQL Query - Checking for overlapping DATE intervals At it's heart, minus all the fancy magic with DATES this is simply a problem of checking for overlapping intervals. After all dates can be thought of as numbers and it may make the logic easier. Imagine the following table: Schedules schedule_id | start | end 1 | 1 | 3 2 | 4 | 7 3 | 8 | 13 4 | 15 | 16 5 | 18 | 24 6 | 25 | 28 I'm trying to insert a new interval

问题 I've been thinking on how I can simplify the problem presented here. Complex MySQL Query - Checking for overlapping DATE intervals At it's heart, minus all the fancy magic with DATES this is simply a problem of checking for overlapping intervals. After all dates can be thought of as numbers and it may make the logic easier. Imagine the following table: Schedules schedule_id | start | end 1 | 1 | 3 2 | 4 | 7 3 | 8 | 13 4 | 15 | 16 5 | 18 | 24 6 | 25 | 28 I'm trying to insert a new interval

问题 I have a set of events that each have a start and end date, but they take place over the scope of a number of months. I would like to create a table that shows the number of days in each month for this event. I have the following example. event_start_date <- as.Date("23/10/2012", "%d/%m/%Y") event_end_date <- as.Date("07/02/2013", "%d/%m/%Y") I would expect to get a table out as the following: Oct-12 8 Nov-12 30 Dec-12 31 Jan-13 31 Feb-13 7 Does anybody know about a smart and elegant way of

问题 This is similar to what I have now, which is: SELECT COUNT(author) FROM `posts` WHERE `date` >= DATE_SUB(CURDATE(), INTERVAL 1 WEEK) AND author='FooBar' This will give me a count of how many times an author has posted in the past 1 week. I want to instead have it so if I am to run the program on Sunday at 5:30 PM to look for posts from last Sunday 12:00 AM to this Sunday 12:00 AM. Likewise, if I forget to run it on Sunday and it's monday now. I still want it to run from last Sunday 12:00 AM

问题 Some brief background: I have a java app that's used to see when certain locations (classrooms) are in use or not. The user puts a location identifier into a search box and the program displays any events (classes) matching. The app will display all the pertinent information (class name, room #, professor name, day of week, time of class), classes that are in-session (or soon to be) are color-coded so you can tell at-a-glance if there's anything coming up. The data comes from an html page I'm

问题 When running this query SELECT SYSDATE + INTERVAL '7' DAY FROM DUAL; in a prepareStatement like this PreparedStatement ps = connection.prepareStatement("select sysdate + interval ? day from dual" ); ps.setString(1, "7"); ps.executeQuery(); It will throw an exception, that the syntax is not good, it clearly is, cuz i'm able to run the same query in sql-developer. Is this a bug in PreparedStatement ? can i use prepared statements together with interval? 回答1: The entire expression INTERVAL '7'

问题 I am porting an app that I originally wrote using the accelerometer for IOS 3, to incorporate the new IOS 4 motion capabilities. While capturing motion, the application does little else - no graphics updates for example. I'm doing the following to set up motion updates, as a replacement for my previous use of the accelerometer. I do realize that I could rebuild to do my own polling using NSTimer or something, and may pursue that yet. [motionManager setDeviceMotionUpdateInterval:updateInterval

问题 Although the details of this are, of course, app specific, in the SO spirit I'm trying to keep this as general as possible! The basic problem is how to merge data.frames by date when one data.frame has specific dates and the other has a date-range. Secondly, the question asks how to deal with multiple observations of a given variable, and how to include these in a final output data.frame. I'm sure some of this is standard, but an pretty full search has revealed little. The mre objects I'm

问题 How can I use interval in js? For example I want to call a function every 5 seconds? <script type="text/javascript"> setInterval(openAPage(), 5000); function openAPage() { var startTime = new Date().getTime(); var myWin = window.open("http://www.sabah.com.tr","_blank") var endTime = new Date().getTime(); var timeTaken = endTime-startTime; </script> This script doesn't work, anyone know why? 回答1: These answers are thorough and good; I just want to specifically fix yours. See the other answers