Most voted "mean" questions
23 questions
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answer221
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answer1519
viewsNodejs route configuration using Express 4.8
I am using version v0.10.37 of Node and 4.8 of Express. I am trying to set the route to index. And the following errors appear Error: Route.get() requires callback functions but got a [Object…
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answer123
views'dot Plot' relative to mean with standard deviation
Good morning In the attached graph, the points refer to the value of the average selectivity of each species. On this chart, I’d like to: 1) have larger font sizes of smaller body mass <9kg…
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answer181
viewsAuthentication / Permissions with MEAN Stack
I’m studying the MEAN stack, I’m really enjoying it, and I’m developing simple applications, but I couldn’t find something that would really help me understand better about authentication and…
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answer561
viewsDigital Signage System with Nodejs, is it possible?
I have a question about Node JS and what I could do with it. I started studying about MEAN a few days ago and I was wondering if using this technology I could, for example, create a system of…
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answer2790
viewsNode.js and Express - Typeerror: Cannot read Property
I’m getting the following console error: Typeerror: Cannot read Property '_id' of Undefined I’m reading the book "Mean Full Stack Javascript..." from the code house. During the development of the…
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answers373
viewsHow to calculate the average excluding zeroes in R?
I averaged the following values: MÉDIA = mean(c(12,20,15,0,7,0)) print(MÉDIA) [1] "9" But I need the average that doesn’t consider zeroes: MÉDIA_Sem Zeros = mean(c(12,20,15,7)) print(MÉDIA_Sem…
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answer371
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answer1094
viewsRoute configuration error in Nodejs with Express
I’m having a problem starting Nodejs, similar to this other post at this link, but had no more feedback from those who asked and the solution presented in the reply did not suit me either. The…
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answers96
viewsMean Stack Running the first project
Good afternoon guys, I’m trying to run the Mean stack on my machine (Ubuntu 14.04, 64bits), I followed the step by step site and apparently everything went well when I run the cameo on the ternimal…
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answer109
viewsApplication error when performing Heroku open
Good people, I started a few days ago using the Mean Stack and I’m still very early. I’m using the book Getting Mean with Mongodb, express, angular and Node.js . I’m really enjoying the book, but…
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answer83
viewsHow to ensure security of api’s Rest
I’m creating a system using MEAN Stack and I came up with a question .. My angular client application requests the ex api: POST http://127.0.0.1/api/product If some malicious user found the url of…
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answers45
viewsVPS configuration
I acquired a VPS at Digital Ocean. The idea is to run an MEAN application. So I opted for the "One click apps" option they offer and the installation/configuration of my server was automatic. With…
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answers218
viewsCallbacks that don’t get in my head!
Guys I’m trying to get the concept of callbacks before you start studying NODEJS. But I can’t really understand the syntax of callbacks... it’s just passing a function by parameter? função1…
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answers151
viewsReactive Programming With MEAN stack
I’m thinking about starting to develop a social network similar to Instagram, for learning purposes, using MEAN stack. I thought of my models : User’s: var mongoose = require('mongoose');…
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answers206
viewsr - average of one variable relative to the values of another variable in a data frame and take NA values
I have a multi-column dataframe. How do I calculate the average of one variable based on the values of another variable? I have the frequency of several species found in 4 campaigns and I want to…
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answer236
viewsr - average of one variable relative to the values of another variable in a data frame within each grouping
This question is after one posed by me recently. This is the link if you want to follow r - average of one variable relative to the values of another variable in a data frame I have a dataframe with…
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answer251
viewsMongodb for multi-user data
I am developing an application to the best ERP style, but much simpler. It is a program of type MEAN (Mongodb, Express, Angular 2 and Nodejs) and also has a version for Android made with Ionic 2. It…
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answer114
viewsNew project in MEAN Stack
Some time ago I read the book of MEAN of the House of the code, I made all the application and later I got to take course of Alura also of MEAN, however frameworks updated and I’m looking to do a…
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answers256
viewsNo 'Access-Control-Allow-Origin' header is present on the requested Resource. - MEAN STACK
Hello! I need to pass a string to Node and am receiving the following response in the browser console: Failed to load http://localhost:3003/api/buscarCep: No 'Access-Control-Allow-Origin' header is…
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answers152
viewsNode with mongodb not starting application
I’m trying to raise an application in Node with mongoose, (I am studying, MEAN book code house) and generates me the following error while trying to start the file server.js where I start my…
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answers63
viewsHow to add a new column with the group average in pandas?
I’m trying to insert a new column with average home goals per team . I calculated the average, but I cannot insert this value in a new column. database: https://www.football-data.co.uk/brazil.php My…
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answer123
viewsMEAN STACK: Mongoose model blocks communication with my controller
Man controller does not send data to my router when mine Model is being exported in the application and I don’t know why it happens. controller js. var Model = require('../models/dado.js');…