The mat type stores an array of doubles, so to get the size of the array as bytes: A.n_elem * sizeof(double) The total amount of memory used by A is sizeof(A) + (A.n_elem * sizeof(double)). solved How much memory is required to store a matrix using the armadillo linear algebra package?
Try this: echo date(“M, d”, strtotime($from)); 1 solved How can I change date format? [closed]
I think you can try this to obtain a list for all the users (left join with table user in this case is not enough – see my sample data below): SELECT C.USERNAME, A.CALENDARDATE , CASE WHEN B.USERNAME IS NULL THEN ‘Absent’ ELSE ‘Present’ END AS STATUS , CAST(B.WDT AS DATE) AS WDT, CAST(B.WDT AS … Read more
I think it’s a very bad idea to calculate two very large numbers and hope that the quotient comes out as something sensible. Start by taking the natural log: ln(n!/(q!)^r) = ln(n!) – r*ln(q!) You can use gammaln() for the two function values, simplify, then take exp() to get the result you want: value = … Read more
LocalDate and ThreeTenABP String dateString = “2019-11-27”; LocalDate date = LocalDate.parse(dateString); int epochDay = (int) date.toEpochDay(); System.out.println(epochDay); This snippet outputs: 18227 The documentation explains: The Epoch Day count is a simple incrementing count of days where day 0 is 1970-01-01 (ISO). So my suggestion is that this number is fine for feeding into your BarEntry … Read more
A possible approach could be to start from an empty string and add characters one by one to it using a recursive function and printing it. Here is my code: #include<stdio.h> #include<stdlib.h> #include<string.h> void print_string(char str[],char new_str[],int current_len,int n,int len) { /* str=orignal set, new_str=empty char array, current_len=0(Intially) n=no of elements to be used len=the … Read more
I would suggest storing the price information as a numeric value somewhere, like in hidden input fields or data- attributes on the table cells, and create IDs on those elements that you can associate with the inputs for stock purchases. Then it’s just a matter of doing some simple math. Here’s an example using hidden … Read more
This is most likely a permission issue. Check write permission with is_writable or enable error output with ini_set(‘display_errors’, true); Change permissions for data.txt accordingly. 0 solved Save html form data to a txt file using php
You need to write a backend API that will be used by your frontend/desktop application. The technology you use is up to you – it can be Node, Python, Ruby, Java, Go, Lua, Perl or even C. If you use Node then you can use Express, if you use Python then you can use Django, … Read more
Im new to coding and was trying to loop through a list and kept coming up with the error code list index out of range. Why does this not work? solved Im new to coding and was trying to loop through a list and kept coming up with the error code list index out of … Read more
Define Views with proper IDs in your respective xml file for MapsActivity & then try to clean & rebuild the project. 0 solved Errors in symbol variables
Why would you want to do this? VBA doesn’t have a keyword that represents entering into a cell. You can select the cell like this though: Sub DoNotRun() Dim rng as range For Each rng In ThisWorkbook.Worksheets(“Sheet1”).range(“A:A”) rng.Select Next rng End Sub If you really need to simulate a double click — Worksheets have a … Read more
main.qml import QtQuick 2.6 import QtQuick.Window 2.2 import QtQuick.Controls 1.4 Window { id:appWindow visible: true width: 640 height: 480 title: qsTr(“Hello World”) property int count: 0 signal forward function fun1(argument1){ console.log(“A function fun1()in the main QML file is invoked by dynmic object”) console.log(“Returned parameter from the QML dynamic objects = “, argument1) } Item { … Read more
Java is not C++. You need to write swap differently in Java. public static void swap(int[] a, int i, int j) { int t = a[i]; a[i] = a[j]; a[j] = t; } Java doesn’t support & and * unary operators. On the plus side you don’t need to pass the length of an array … Read more
String.replaceAll() returns a new string with the specified replacement. You need to do: myString = myString.replaceAll( “old”, “new” ); 1 solved String replaceAll not working with string object [duplicate]