Questions tagged [dataflow]

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3answers
153 views

Diagram to show how one object “becomes” another?

I am working in a purchasing system where we take calls: public class Call { public List<CallItem> CallItems { get; set; } } The calls can be turned into quotes, where call items become ...
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0answers
56 views

Program Simulation Techniques

I've noticed that data-flow analysis uses approximations of a programs steps by simulating the value flow in some way (which I don't fully understand yet). They describe it well here. On page 4 they ...
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2answers
78 views

CLI to Aid Versioning of Input, Source, and Output

I'm currently working in an environment where I have the following: Multiple Inputs (with multiple versions) Source code to generate output (multiple versions) Output generated by a combination of ...
2
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1answer
630 views

Is undo and redo possible/feasible with two-way data binding (vs uni-directional data flow)?

I'm developing an experimental application for work that requires fully persistent undos and redos. I decided to use react/redux/immutable JS tech stack to solve this problem because I saw it worked ...
1
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2answers
84 views

Application design for step by step filling information data flow

Suppose, my application consists of many components, where users need to fill theirs information, something like this: -Select city `-Select library `-Select book `-... a lot of components like ...
4
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3answers
316 views

Patterns to allow for versatile data-flow hooks in Javascript

I have an application where I'd like to add ways for external modules/components to hook during the processes and data-flow and perform actions/modify data. For the first requirement—performing ...
2
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0answers
375 views

Spark supports cyclic data flow

I read on http://spark.apache.org/ that Spark supports cyclic data flow. How can data flow be cyclic if the RDDs used by Spark are immutable? I thought the processing done by Spark looks like an ...
1
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1answer
159 views

How to decide if object should request or receive data?

Deciding whether an object should request data (by calling a function) or receive data (by having a function called from another object) is probably dependent on the exact situation. So how do I ...
1
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1answer
426 views

Using streams to connect programming languages

I'm trying to run a computation-heavy program that creates an image on a website. Is it possible to compute in C++ and have an output stream that connects to an input stream in Node.js to display an ...
3
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1answer
282 views

How to efficiently implement this background processing chain?

I am working on an audio software that uses The EchoNest web service to identify and retrieve metadata about audio songs and I would like to have some advice on implementing a background processing ...
12
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3answers
4k views

What is a “lifted representation”?

Just ran across this term here: http://www.codemesh.io/codemesh2014/viktor-klang "We'll demonstrate the Flow API—a lifted representation—as well as a pluggable way of transforming the lifted ...
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1answer
296 views

Good approach for hundreds of comsumers and big files

I have several files (nearly 1GB each) with data. Data is a string line. I need to process each of these files with several hundreds of consumers. Each of these consumers does some processing that ...
1
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2answers
1k views

How to manage data flow between UI components?

I have been trying to use classes that implement ActionListener to respond to user input. I'm consistently noticing that for an action listener to communicate the event to other objects, it has to ...
6
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0answers
704 views

Implement FBP / Dataflow programming in VBA?

Intrigued by Flow Based Programming a la J Paul Morrison. I wonder if one can implement FBP in Excel/VBA. I searched quite a bit for a Basic-Lang FBP implementation to no avail. I've looked at some ...
3
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1answer
552 views

How do I transparently cache data in intermediate stages of processing?

I am working with MATLAB on a model reduction algorithm. It is basically a data processing pipeline. ckt = generate_ckt(ckt_properties); freq = generate_fpoints(fconfig); result = freq_dom_sim(ckt,...
4
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4answers
589 views

Is it bad practice for a module to contain more information than it needs?

I just wanted to ask for your opinion on a situation that occurs sometimes and which I don't know what would be the most elegant way to solve it. Here it goes: We have module A which reads an entry ...
5
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3answers
2k views

Real-time Dataflow Programming

Background Recently, I have been fascinated about the possibilities of dataflow-based programming approaches - in particular, signal/event-based concepts as realized by functional reactive ...
11
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6answers
3k views

Do you see an use for “Spreadsheet programming”? [closed]

A while ago I stumbled upon the concept of using spreadsheets (I mean cells and formulas not Macro code) as a way to specify programming logic. The idea is: create a spreadsheet with a cleanly ...