intervals

问题 I am currently trying to cut an interval into not equal-width slices. In fact I want the width of each slice to follow a logarithmic rule. For instance the first interval is supposed to be bigger than the second one, etc. I have a hard time remembering my mathematics lectures. So assuming I know a and b which are respectively the lower and upper boundaries of my interval I , and n is the number of slices: how can I find the lower and upper boundaries of each slice (following a logarithmic

问题 I have two objects calendar Calendar startCalendar = new GregorianCalendar(2013,0,31); Calendar endCalendar = new GregorianCalendar(); I want to know if the interval between the two dates listed above is covered by n of other objects pair calendars without holes between intervals Example1: Calendar startCalendar1(2013,0,31); Calendar endCalendar1(2014,0,31); Calendar startCalendar2(2013,5,31); Calendar endCalendar2(); Is GOOD Example2: Calendar startCalendar1(2013,0,31); Calendar endCalendar1

问题 Sorry if this has already been posted but I looked really hard and could not find anything. I am working with monthly temperature observations for 30 years, comprising January 1960 to December 1989. It looks like this: > head(df) date temp 1 1960-01-01 22.92235 2 1960-02-01 23.07059 3 1960-03-01 23.10941 4 1960-04-01 20.78353 5 1960-05-01 17.45176 6 1960-06-01 17.31765 First, what I need to do is to average all januaries, februaries, marches and etc for the whole period. Then, I would like to

问题 How can I set a macro to run at a specific time and then at set intervals afterwards? I would like it to run at the top of each hour so I would like to start it at 07:00AM for example and then every hour after I want it to run again. Here is the code: Sub Refresh_All() ' ' Refresh_All Macro ' ' Keyboard Shortcut: Ctrl+Y ' ChDir "Q:\Quality Control" Workbooks.Open Filename:= _ "Q:\Quality Control\Internal Failure Log - Variable Month.xlsm" Dim endTime As Date endTime = DateAdd("s", 10, Now())

问题 I have a huge database table with n integer intervals (for instance {1-5}, {4-16}, {6434-114343}) and need to find out which intervals overlap each other . There's a wealth of similar questions on SO, but the difference is I need returned, for each interval respectively, the set of overlapping intervals. ------------------ A ------------------- ------ B ------- ----- D ----- --------- C --------- For this example, output would be A:{B,C,D} B:{A,C} C:{A,B} D:{A} Worst case, all intervals could

问题 I have a list of intervals, and I need to compare them for overlaps. List<Interval> intervals = new ArrayList<>(); intervals.add(new Interval(dateTime1, dateTime2)); intervals.add(new Interval(dateTime3, dateTime4)); intervals.add(new Interval(dateTime5, dateTime6)); eg. dateTime1 = 2014-06-01 dateTime2 = 2014-07-01 dateTime3 = 2014-08-01 dateTime4 = 2014-09-01 dateTime5 = 2014-08-15 dateTime6 = 2014-09-15 In this case, there is an overlap between the 2nd and the 3rd interval. I can use the

问题 Let's say I have a datetime, June 16 2011 at 7:00. I want to be able to check at, say, August 5 2011 at 7:00 and be able to tell that it is exactly a multiple of 1 day since the first date, whereas 7:01 would not count, since it is not an exact multiple. Another test set: Let's say we have June 16 2011 at 7:00, and I want to check if a particular minute is within an interval of exactly 2 hours since then. So 9:00, 11:00, 13:00, etc. would count, but 9:30 and 10:00 would not. And this could

问题 I did some playing around in this answer, and have even raised a RADAR issue with Apple, asking for better documentation on the matter (Crickets chirping). The question is this: How do String Intervals work? If you look at line 367 in my playground, you'll see me messing with String Intervals. I extracted the String stuff into a smaller playground: // String Intervals // These are odd. Looks like it is using the ASCII values. I should experiment with Unicode, and see where we go... let

问题 I have a thread which grabs some data from network or serial port. The thread must terminate (or return false) if no data is received within 5 seconds. In other words, if running the thread is taking more than 5 seconds it must stop. I am writing in C#, but any .NET language is OK. 回答1: There are two approaches: 1. Encapsulated timeout The thread reading the data from network or serial port can measure time elapsed from its time of start and wait for the data for no more than the remaining

问题 I'm trying to create a chat in c# form and i have created two timers; one of them is checking every 1 second if someone wrote something, the other one is sending every 1 second the message "I'm Online" or "I'm offline" depends on what i have set; the problem is that i'm spamming too much even if i did an if which doesn't show anymore the spam messages; but the problem is even if i don't see the messages, the chat is lagging, i mean more time i let it open more lag it does.. for example if i