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Mastering Development

I am trying to categorize obervations with a variety of names by grouping them by new variables

I am new to coding and have been trying to use R to simplify the management of mice for the research lab I work at. To use mtcars as an examples. I want to group different observations in mtcars by new variables. For example, if i wanted to group the cars by country of origin […]

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Development

Cannot read property ‘map’ of undefined in the react-redux list

I have tried the solution in the link below but still can’t figure it out. I’m a newbie in react and also JS. Can anyone help me out. @@ Cannot read property 'map' of undefined const mapStateToProps = state =>{ return { data:{ names: state.names, ages: state.ages, genders: state.genders }, }; }; // This is […]

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Development

How to list all the cousins of a person in a binary tree

Given a list of names, ages, and children of members of a family (each of which has at most 2 children), I want to identify the names of all the cousins of particular family member. I have created this binary tree ADT to create a family tree: def make_empty_tree(): return (“btree”,[]) def makeTree(root,left,right): return (“btree”,[root,left,right]) […]

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Development

How to get a value of string from first class and use in second class

I’m trying to get value of a string from first class and I want to use in second class but I don’t know how to do it. I just want to access first class value and use in second class. I’ve already tried getter and setter method: tk = tkinter(‘rohit’) print(tk.__getattribute__(‘length’)) This is my code: […]