Questions tagged [waterfall]
Waterfall is an abstraction model for software design which translates requirements into lists of simple routines and arranges them in a sequence of phases based on dependencies.
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Giving up Agile, Switching to waterfall - Is this right? [closed]
I am working in an Agile environment and things have gone to the state where the client feels that they would prefer Waterfall due to the failures (that's what they think) of the current Agile ...
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Asynchronous Loop of jQuery Deferreds (promises)
I am trying to create what I think is referred to as a "Waterfall". I want to sequentially process an array of async functions (jQuery promises).
Here's a contrived example:
function doTask(...
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answers
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Functional Spec & Agile Processes [closed]
In traditional Waterfall, requirements were gathered - typically in a MS-Word document - following an esoteric template. In a "strict" waterfall model, this document is frozen after the requirement ...
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Bot framework v4.0 how to execute the previous waterfall step in a dialog
I'm trying to create a dialog in which I define multiple waterfall steps. In the context of this dialog, I need sometimes to go back to the previous waterfall step according to the choice of the user. ...
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Is frequency of release the only real difference between Agile and Waterfall? [closed]
Obviously the differences in the impact to teams, customers, ROI, etc. of applying the two approaches is huge and is the subject of many books and endless discussions and conferences.
But as I think ...
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Handling interdependent and/or layered asynchronous calls
As an example, suppose I want to fetch a list of files from somewhere, then load the contents of these files and finally display them to the user. In a synchronous model, it would be something like ...
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answers
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Predictive vs Reactive software design [closed]
I know that for me I first got started following the waterfall method of project management and along with that I went with the predictive approach to software design. In this I mean we had huge ...
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How to cheaply simulate water on iOS?
First off, I'm not thinking about that.
I was wondering how to make a simple simulation of a waterfall onto some dunes on the iPhone.
It turns out several people tackled the issue of moving water, ...
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8
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4
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What methodology is closest to the Surgical Team in The Mythical Man-Month? [closed]
The Mythical Man-Month is now classic, but the "Surgical Team" methodology is still interesting. What methodology most closely resembles it or has the same essence?
To summarize the Surgical Team ...
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Asyncjs : Bypass a function in a waterfall chain
I want to jump a function from a chain of waterfall functions with asyncjs in nodejs.
My code look like this :
async.waterfall([
function(next){
if(myBool){
next(null);
...
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3
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Adaptive Card response from a WaterfallStep Dialog MS Bot framework v4
I am trying to send an adaptive card which has 2 options for user to select.
When user submit the response from adaptive card I am receiving :
Newtonsoft.Json.JsonReaderException: Error reading ...
7
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1
answer
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Can you go back a step in a waterfall dialog if the user entered wrong data? #botframework
In a dialog, I want to ask the user for his email address.
If the user entered an invalid email by mistake, I would like to be able to go back or get into some "loop" situation of keep asking him for ...
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0
answers
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Why does a cached file have a high Waiting (TTFB) or Content Loaded ms value?
I'm looking at a waterfall in Chromes Developer tools of several CSS and Javascript files.
When refreshing the page, several of the files load from the browser cache, as expected. These are taking ...
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when a bug for client is really a new feature [closed]
I read
what-payment-structure-do-you-use-for-small-projects
and I wonder how you guys are dealing with bug vs. feature. I once had a situation where a client wanted static reports. Then near the end ...
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What are alternatives to the Waterfall model
Can you please give a methodology that stands to alleviate the disadvantages of waterfall model?
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What is a simple implementation of async.waterfall?
I'm using some functions from the async library, and want to make sure I understand how they're doing things internally; however, I'm stuck on async.waterfall (implementation here). The actual ...
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Node async parallel inside waterfall
I'm building a server in Nodejs to retrieve data from some database. I've worked with the async library for some time now and figured out some things like putting a waterfall inside a parallel ...
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Understanding Node.JS use async.waterfall how to execute external functions
I need to execute async function using async.js module.
But i have some problem when i execute external functions.
the code is pass well.
but when i change global variables to local variables, i can'...
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views
Are you an agile/pragmatic developer in a waterfall organization? [closed]
If so, how do you deal with things that just don't "feel" right such as:
not writing unit tests
not having a continuous build
not refactoring
not having a team coding standard
not pair programming
...
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votes
1
answer
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R Plotly: How to set the color of Individual Bars of a Waterfall Chart in R Plot.ly?
I am trying to change the color of the individual bars of a waterfall chart using R Plotly. More specifically the first and the last bar, I want it to be blue and yellow respectively. So in the below ...
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(Rational) Unified Process vs Waterfall Model
I was reading about software development model and life cycle, where I learned about waterfall model and Unified process. However both the process involves requirement gathering, design phase, ...
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I use async waterfall, why callback is not a function?
I get this:
Error: TypeError: callback is not a function
Code:
var async = require('async');
async.waterfall([
(callback) => {
callback(null, 'test');
},
async (value1, callback) =&...
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handling error in async waterfall with expressjs
I don't see why expressjs don't handle error when it's throw in async.waterfall
var express = require('express')
, app = express.createServer()
, async = require('async');
app.use(express....
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SDLC and Software Process
I have some confusion about the terms SDLC and Software Process. With respect to these (and more or less similar) terms, a have a few question.
What is the difference between SDLC and Software ...
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async.js waterfall in node.js: how to use bind and this?
I'm learning node.js coming from a PHP background with a limited JavaScript level. I think I got over now the change of mindset implied by the asynchronous approach. And I love it.
But, as many ...
user2456016
4
votes
0
answers
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What is a function call written as (0, fn)(argOrArgs)? [duplicate]
I am using Node.js async/waterfall, find this strange pattern of program:
var callback = (0, _once2.default)(callback || _noop2.default);
can someone explain what (0, _once2.default) means? why not ...
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1
answer
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Convert Dataframe to make Waterfall Chart in ggplot2
I want to transform my dataframe into a format that would be suitable for a waterfall chart.
My dataframe is as follows:
employee <- c('A','B','C','D','E','F',
'A','B','C','D','E','F'...
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can I use async.waterfall inside async.parallel?
I want to call two functions and get the results in parallel but one of the function's results needed to be adapted. So the function structure is:
function test(cb) {
async.parallel({
func1: ...
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Is there any harm to not calling the final callback in an Async waterfall?
async.waterfall(
[
function(cb){
//do some stuff and then never call cb leaving the async waterfall unfinished
},...],
function(err,result){
//we only get here if the cb is called ...
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answer
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Waterfall Highchart to start some of the columns in between the series with 0 y-axis
Can anyone please help me to change the behaviour of waterfall highchart to show graph like in screenshot?
Actually I know about isSum and isIntemediateSum property. Using which I can start some of ...
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Are there any pros for the waterfall model testing vs agile? [closed]
I have read much information about agile and waterfall and I just cannot think of any reason why someone today should do the waterfall. I am concerned especially about testing process.
Do I miss ...
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3
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how to refactor waterfall .then() [duplicate]
This code here loads data using actions and would be series, but its going to be hard to edit this code add another API load, and the syntax is not clear.
this.props.loadNutMatrixes({perPage:'all'...
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2
answers
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Image Segmentation, watershed, waterfall, p algorithm
I was wondering if anyone is aware of any currently available packages for segmentation using the waterfall method or p algorithm. I've looked in github, CRAN, and Fiji and haven't found anything ...
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stacked waterfall charts in highcharts
We have a requirement for stacked waterfall charts (we are using highcharts.com).
http://fiddle.jshell.net/8JP8T/ gives an option for creating waterfall charts but we need to create stacks. Anyone ...
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Node async waterfall callback was already called
I'm trying to read some files from dir with async.waterfall, it seems to me that I'm doing stuff right, but I get the specified error and the readData function is never called. What's wrong?
var fs = ...
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Node.js server waterfall error TypeError: Cannot read property 'Symbol(Symbol.toStringTag)' of undefined
I am writing a server with two functions, one using the output of another function. When the server runs, it gives an error:
TypeError: Cannot read property 'Symbol(Symbol.toStringTag)' of undefined
...
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1
answer
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views
Highcharts - column chart with drilldown to waterfall
I have a strange behavior with my drill down to a waterfall chart. My middle column which is a negative value is not positioned on the top, instead it is going from zero down.
I have taken the exact ...
2
votes
1
answer
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views
about labeling the x axis
I have many data need to be plotted as waterfall in matlab. I have more than 10 columns of data, each column represents one data data set. I put all data in a big matrix such that the first data set ...
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waterfall plot using ribbon
I have a series of spectral data which I want to plot in a waterfall style plot.
waterfall itsself is no that usefull, because the thin lines have too many differences in each spectrum, that is is not ...
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How do I show multiple years on a plotly waterfall chart using R
I'm working on making a waterfall chart to show the changes across multiple years using the same categories (i.e. buckets of change). I run into issues with my categories having the same name (growth, ...
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Using for loop with async in nodejs
I have connected with mongodb and nodejs.
I have question about sav query results to list.
results = [];
for(i = 0; i<query.length; i++){
db.collection(collectionName).find(query[i]).toArray(...
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1
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fill the blanks of waterfall from other table
I have two tables:
1. raw forecast data from forecast table, pulled by snap shot dates, and I use the data to created waterfall looks like this
item/snapshot forecast weeks
123 | 8/25/14 | ...
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Microsoft Project and Waterfall [closed]
Microsoft Project and Waterfall
Does using Microsoft Project force you into a waterfall model? Could anyone point me to examples of successful iterative (agile for example) projects that successfully ...
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0
answers
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duplex stream getting changed in callback:node js
I have a code where I am getting a duplex stream and in that function I call a callback which return me the values from redis.
function (index, arr, null, callback) {
const streamObject = ...
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views
Slow TTFB at Cloudflare with Heroku server
I'm hosting my site at Heroku SaaS and something weird is happening with the Waterfall, to be specific the TTFB number.
When accessing the site through the Heroku dns, I get a excellent TTFB, ~200ms. ...
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Waterfall plot with different x axis [duplicate]
I would like to make a waterfall plot in MATLAB using a different x axis for each plot. I want my plot to look like the picture in the answer to this question: waterfall plot using ribbon , but in ...
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How to Transition to Scrum [closed]
My team has grown fairly quickly from 1 to 5 over the last year or so and are very interested in changing our development style from Waterfall to a more iterative approach like Scrum. We work for a ...
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1
answer
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How to stop executing waterfall on error in async of node.js?
I am using async module with waterfall method.
async.waterfall([
function(callback) {
...
callback(err);
},
function(result, callback) {
...
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vote
2
answers
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views
Should we use scrum when requirement is clear [closed]
I tried to practice Scrum in my team. But my colleague asks me:
Our software has clearly requirement. So why we should use scrum
How can I persuade him from this case.
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Is a Waterfall model an Incremental development model? [closed]
I was wondering if a Waterfall model is an incremental model because technically each phase of the Waterfall model adds on a little more.
Thus saying this I have read from quite a few different ...
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