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Mastering Development

Can someone please explain some things related to the for.Each() method?

I’m learning Javascript and at the moment just going through all the little chapters in w3schools about it. Even though I’ve been having a mostly good experience, sometimes the explanations are not thorough enough and I am left confused. My problem wasn’t the forEach method itself, but instead what came along with it. Here I […]

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Mastering Development

How to deploy a Vue.JS MPA (Multi Page Application)

I created a multipage application using vue.js with vue.config.js method i developed it with no problems i created a production build i can access home page however i cannot access other pages like about us, portfolio etc. What could be the issue?? and how to solve it? is it about the .htacess? here is my […]

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Mastering Development

Python Exception: Data must be 1-dimensional

I have a function findMaxEval which I invoke in a following way: eMax0,var0=findMaxEval(np.diag(eVal0),q,bWidth=.01) where np.diag(eVal0) is an ndarray of shape (1000,), q is a number (10). findMaxEval has the following definition: def findMaxEval(eVal,q,bWidth): out=minimize(lambda *x:errPDFs(*x),.5,args= (eVal,q,bWidth),bounds=((1E-5,1-1E-5),)) if out[‘success’]:var=out[‘x’][0] else:var=1 eMax=var*(1+(1./q)**.5)**2 return eMax,var This funtion tries to minimize errPDFs which is defined as follows: def errPDFs(var,eVal,q,bWidth,pts=1000): […]

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Mastering Development

can you help me to understand one line code

This is the code Explain me the below code System.out.println(lastAns= sqList[index].get(y % sqList[index].size())); And the full program is – import java.util.*; public class Dynamic_Array { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc= new Scanner(System.in); int nS=sc.nextInt();//Sequence int nQ=sc.nextInt();//Queries int lastAns=0; int x,y,index,type; ArrayList<Integer>[]sqList = new ArrayList[nS]; while(nQ–>0) { type=sc.nextInt();//type […]

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Mastering Development

Passing a variable from Child component to Parent component

I am not getting the index from the event => { this.handleChange(event, index) } from the Child component, and I suspect the event isn’t arriving either. I don’t know how to transfer it up to the parent. I have tried adding it into the Child’s props.onChange(event, index) but that didn’t work. And i’ve fiddled as […]

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Mastering Development

Using pickle to load random forest model gives the wrong prediction

I have built a random forest model using sklearn and python, and I pickled the file as ‘finalizedmode.sav’. I am now trying to load the pickled model to get predictions on the first two rows of my test data, to make sure everything is working properly. When I run the model to predict the first […]

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Mastering Development

React overlay and tooltip problem specifically on placement=”top”

I am trying to create overlay using react. I am using react-bootstrap.Overlay placement is working fine for left, right and bottom but on top it not showing overlay as required. Overlay is shown at the bottom of page on setting placement = "top". I also include {…props} as suggested on github but wasn’t able to […]

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Mastering Development

How to map elements into two table columns, two elements per row?

I’m trying to get the end result to look like, (following this example): <style> * { box-sizing: border-box; } .column { float: left; width: 50%; padding: 10px; height: 300px; } .row:after { content: ""; display: table; clear: both; } </style> <div class="row"> <div class="column"> <Component /> </div> <div class="column"> <Component /> </div> </div> The problem […]

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Mastering Development

Loop in React JSX

Instead of using fileList.map(), I want to put it in for loop and setTimeout(500) for every single loop. How can I do it ? const SortableList = SortableContainer(({ fileList }) => ( <div> { fileList.map((file, index) => ( <SortableItem key={`item-${index}`} index={index} value={file} /> )) } </div> ))

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Mastering Development

How is this for loop executing its iterator out of order?

I’m using a for loop within an async function with an await involved in the loop. From what I read, for loops are supposed to play nice with await, but it seems like there’s some unusual behavior that I don’t understand. Consider the func described, abridged down to the fundamentals of the scenario: let counter […]