Constructor undefined, java

I don’t understand why Eclispe tells me that : – The constructor LyyraCard(int) is undefined – Line breakpoint:Main [line: 6] – main(String[]) I do have a constructor. Here is my LyyraCard class code : public class LyyraCard { private double balance; public LyyraCard(double balanceAtStart) { this.balance = balanceAtStart; } public String toString() { return “The…

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working with factors: reordering, relabeling and recoding in R

I am having some trouble “factoring” a character variable and labeling/recoding the different levels. Is there an efficient way (i.e. less coding) to this with tidyverse or Base R such as recode or fct_collapse etc… Thank you #This is what I have (a character variable) x <- c(“No”, “Yes”, “No2”, “No3”, “Maybe”, “undecided”, “probably”, “dont…

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Query to update 2 models same time c#

Below are two sections of code. Save course description public int SaveCourseDescription(CourseDescription coursedescription, bool isEdit = false) { string insertSql = @”INSERT INTO CourseDescription (CourseName, CourseCategoryID, CourseCountryID, CourseDuration) VALUES(@CourseName, @CourseCategoryID, @CourseCountryID, @CourseDuration);select last_insert_rowid()”; string updateSql = @”update CourseDescription set CourseName = @CourseName, [email protected], [email protected], [email protected] where CourseID = @CourseID;select last_insert_rowid()”; string sql = isEdit ?…

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How to get the sum total of the product of two fields across all the collections in mongoose

I have a store inventory collection that contains “quantity” and “price” fields respectively { “_id”: “5dd033a1a9133424a8ae2924”, “name”: “Belt”, “description”: “Auto”, “price”: 7, “quantity”: 60, “supplier”: “Thomson”, “taxable”: true, “createdAt”: “2019-11-16T17:36:33.753Z”, “updatedAt”: “2020-01-11T09:33:27.756Z”, “__v”: 0, “orders”: [] }, I want to be able to get the Total cost of all the items in the store i.e…

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