difference

Calculate time difference using Python [duplicate]

由 风格不统一 提交于 2019-11-27 06:07:38
问题 This question already has answers here : How do I find the time difference between two datetime objects in python? (13 answers) Closed 7 months ago . I am wondering if there is a way or builtin library available to find the difference in time from two string input. What I mean is, if I have 2 input strings: '2013-10-05T01:21:07Z' '2013-10-05T01:21:16Z' how can I can calculate the difference in time and print it as output. I know it sounds a bit silly but any help on this is appreciated. 回答1:

Android - Snackbar vs Toast - usage and difference

由 拈花ヽ惹草 提交于 2019-11-27 05:33:20
问题 We have been using just Toasts in our application so far and as we are planning to adopt some new features from Support Design Library I am wondering what's the recommended usage for Snackbar vs. Toast. I have been reading on the google material snackbar doc. Snackbars provide lightweight feedback about an operation in a small popup at the base of the screen on mobile and at the lower left on desktop. They are above all over elements on screen, including the FAB. and toasts. Android also

What's the difference between Mockito Matchers isA, any, eq, and same?

由 流过昼夜 提交于 2019-11-27 05:32:11
问题 I am confused on what's the difference between them, and which one to choose in which case. Some difference might be obvious, like any and eq , but I'm including them all just to be sure. I wonder about their differences because I came across this problem: I have this POST method in a Controller class public Response doSomething(@ResponseBody Request request) { return someService.doSomething(request); } And would like to perform a unit test on that controller. I have two versions. The first

Calculate time difference in minutes in SQL Server

由 怎甘沉沦 提交于 2019-11-27 02:41:02
问题 I need the time difference between two times in minutes. I am having the start time and end time as shown below: start time | End Time 11:15:00 | 13:15:00 10:45:00 | 18:59:00 I need the output for first row as 45,60,15 which corresponds to the time difference between 11:15 and 12:00, 12:00 and 13:00, 13:00 and 13:15 respectively. 回答1: The following works as expected: SELECT Diff = CASE DATEDIFF(HOUR, StartTime, EndTime) WHEN 0 THEN CAST(DATEDIFF(MINUTE, StartTime, EndTime) AS VARCHAR(10))

How to calculate time difference by group using pandas?

由 こ雲淡風輕ζ 提交于 2019-11-27 01:02:19
问题 Problem I want to calculate diff by group. And I don’t know how to sort the time column so that each group results are sorted and positive. The original data : In [37]: df Out[37]: id time 0 A 2016-11-25 16:32:17 1 A 2016-11-25 16:36:04 2 A 2016-11-25 16:35:29 3 B 2016-11-25 16:35:24 4 B 2016-11-25 16:35:46 The result I want Out[40]: id time 0 A 00:35 1 A 03:12 2 B 00:22 notice: the type of time col is timedelta64[ns] Trying In [38]: df['time'].diff(1) Out[38]: 0 NaT 1 00:03:47 2 -1 days +23

Select groups with more than one distinct value

由 妖精的绣舞 提交于 2019-11-26 21:06:11
I have data with a grouping variable ("from") and values ("number"): from number 1 1 1 1 2 1 2 2 3 2 3 2 I want to subset the data and select groups which have two or more unique values. In my data, only group 2 has more than one distinct 'number', so this is the desired result: from number 2 1 2 2 Several possibilities, here's my favorite library(data.table) setDT(df)[, if(+var(number)) .SD, by = from] # from number # 1: 2 1 # 2: 2 2 Basically, per each group we are checking if there is any variance, if TRUE , then return the group values With base R, I would go with df[as.logical(with(df,

What are the differences between activity and fragment?

由 余生颓废 提交于 2019-11-26 19:48:37
As per my research, there is a significant difference in the concept of backstack and how they exist: Activity When an activity is placed to the backstack of activities the user can navigate back to the previous activity by just pressing the back button. Activity can exist independently. Fragment When an fragment is placed to the activity we have to request the instance to be saved by calling addToBackstack() during the fragment transaction . Fragment has to live inside the activity Are there any additional differences? Юрій Мазуревич Those are two completely different things: An Activity is

What is the difference between HashSet<T> and List<T>?

由 蓝咒 提交于 2019-11-26 19:31:44
Can you explain what is the difference between HashSet<T> and List<T> in .NET? Maybe you can explain with an example in what cases HashSet<T> should be preferred against List<T> ? Thanks. BonyT Unlike a List<> ... A HashSet is a List with no duplicate members. Because a HashSet is constrained to contain only unique entries, the internal structure is optimised for searching (compared with a list) - it is considerably faster Adding to a HashSet returns a boolean - false if addition fails due to already existing in Set Can perform mathematical set operations against a Set: Union/Intersection

The difference between head & tail recursion [duplicate]

由 随声附和 提交于 2019-11-26 19:10:22
问题 This question already has answers here : What is tail recursion? (27 answers) Closed 5 years ago . I'm trying to get the difference between these 2 recursive strategies. The definition I was told is the following: Tail Recursion: A call is tail-recursive if nothing has to be done after the call returns i.e. when the call returns, the returned value is immediately returned from the calling function Head Recursion: A call is head-recursive when the first statement of the function is the

Difference between Run() and ShellExecute()

由 空扰寡人 提交于 2019-11-26 18:38:22
问题 I want to execute something in a shell/terminal on Windows via AutoIt. And I know that there are two ways of doing it. For example: Run(@ComSpec & " /c " & $myCommand, "", @SW_HIDE) ;and ShellExecute($myCommand) I don't understand the difference; both functions will do what I want, but what's behind them? Which pros and cons do they have? 回答1: Run() is used to fire off executable files only. It requires the full path of the program. ShellExecute() also accepts content files like .txt, .htm
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