difference

问题 I have two 2d lists: Both are of same size with size unknown (different for different set of lists) For instance: A = [['ID', 'Name', 'Profession'], [1, 'Tom', 'Teacher'], [2, 'Dick', 'Actor'], [3, 'Harry', 'Lawyer']] B = [['ID', 'Name', 'Profession'], [1, 'Tom', 'Police'], [2, 'Dick', 'Actor'], [3, 'Harry', 'Lawyer']] I want to compare the files element wise (e.g: a[0][1] == b[0][1] ) for all the elements and print the difference with element index. I would like to have output something like

问题 I'm trying to make some kind of "deadline clock" in python. There is lot of topics about time difference calculations and I followed some and put together this kind of code: import datetime from dateutil.relativedelta import relativedelta # Get current time: today = datetime.date.today() timenow = datetime.datetime.now() current_time = str(today) + " " + str(timenow.strftime("%H:%M:%S")) # Set deadline: deadline = "2019-12-12 15:00:00" # Calculate difference: start = datetime.datetime

问题 Im trying to implement the difference formula f'(x) ≈ [ f(x+h) - f(x) ] / h using MATLAB for x=1 and h=10^-k , where k=0,...,16 . Furthermore, I want to plot the error. Below is my code. I see that the error is around 3, which I believe it too big. It should be close to 0. syms f(x) f(x) = tan(x); df = diff(f,x); x = 1; for k = 0:16 h = 10^-k; finitediff = double((f(x+h)-f(x))/h); err = double(abs(finitediff-df(x))); end 回答1: There is nothing wrong in your code, the finite difference formula

问题 First, I give thanks to ksav and his help thus far. I'm a foreman for a landscaping company and it's my responsibility to fill out forms for each site and keep track of our man hours so we don't go over the allotted time. I'm trying to digitize the documents in Adobe so I can enter the times in the field on my phone without pen and paper and have a JavaScript code automatically calculate the hours on site in decimal format. Note: I will be using 24-hour time aka military time (13:00/1PM 16:40

问题 I have a dataframe that looks like this: from to datetime other ------------------------------------------------- 11 1 2016-11-06 22:00:00 - 11 1 2016-11-06 20:00:00 - 11 1 2016-11-06 15:45:00 - 11 12 2016-11-06 15:00:00 - 11 1 2016-11-06 12:00:00 - 11 18 2016-11-05 10:00:00 - 11 12 2016-11-05 10:00:00 - 12 1 2016-10-05 10:00:59 - 12 3 2016-09-06 10:00:34 - I want to groupby "from" and then "to" columns and then sort the "datetime" in descending order and then finally want to calculate the

问题 I have a problem about the difference calculation for the rows using calculated column in Spotfire. I am wondering if it is possible to create a calculated column that will count the difference between the current row with the next row which have different attribute. A sample table could be like this: the result could be like this: the basic row is: When type =1, then calculate the difference between its current value and its next nearest row which type =0, then add the result to a new

问题 Let's say that I have an object which looks like this: { prop1: false, prop2: false, prop3: false } and another object which looks like this: { prop1: false, prop2: true, prop3: false } where the difference is within the prop2 property. Is there any way or library (vanilla preferred though) which will compare the two objects, find the property with the different value, and return the property name (in this case prop2 )? I have tried using the difference and differenceBy functions in lodash to

问题 Let's say that I have an object which looks like this: { prop1: false, prop2: false, prop3: false } and another object which looks like this: { prop1: false, prop2: true, prop3: false } where the difference is within the prop2 property. Is there any way or library (vanilla preferred though) which will compare the two objects, find the property with the different value, and return the property name (in this case prop2 )? I have tried using the difference and differenceBy functions in lodash to

问题 I am running python 3.6.4 , but some times the unit testing diff does not work as expected. For example, on the following there is a forced unit test error versus expected where the line wrapping behavior is not desired. import unittest class TestSemanticRules(unittest.TestCase): maxDiff = None def test_badWrapping(self): self.assertEqual( "1. Duplicated target language name defined in your grammar on: [@-1,63:87='Abstract Machine Language'<__ANON_3>,3:19]\n" "2. Duplicated master scope name

问题 If I run the following code Sub Test_1() Cells(1, 1).ClearContents Cells(2, 1).Value = "" End Sub When I check Cells(1, 1) and Cells(2, 1) using formula ISBLANK() both results return TRUE . So I'm wondering: What is the difference between Cells( , ).Value = "" and Cells( , ).ClearContents ? Are they essentially the same? If I then run the following code to test the time difference between the methods: Sub Test_2() Dim i As Long, j As Long Application.ScreenUpdating = False For j = 1 To 10 T0