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What is a Comonad and how are they useful?

Recently I've been dusting off my knowledge on how Monads work. I've also been introduced to the concept of a 'Comonad', which is described as the inverse dual of a monad. However, I am impossible to ...
Qqwy's user avatar
  • 4,789
16 votes
0 answers
886 views

Is there a reasonable way for a TypeScript class to derive from a Dojo/Dijit class?

DefinitelyTyped has a Dojo solution which uses named modules and may work with legacy Dojo and explicit typing. But these declarations do not facilitate TypeScript import, since there are no anonymous ...
Corey Alix's user avatar
14 votes
0 answers
2k views

Caching Strategy: WCF Buffer pooling and size

I am currently trying to understand the best configuration for caching. I am using Azure In-Role caching (currently Colocated, but Dedicated at a later point) in a Web Api 2 application in .NET 4.5.1....
Dave New's user avatar
  • 897
11 votes
0 answers
853 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 ...
klausnrooster's user avatar
10 votes
1 answer
648 views

Facebook authentication with an Authoritative Server for a Flash Game

I'm working on a multiplatform game in Flash. This game utilizes Photon Server for authoritative physics and user statistics tracking. I'm looking to leverage Facebook authentication as an alternative ...
Kody Manharth's user avatar
10 votes
5 answers
3k views

Write data to SQL Server directly from BizTalk or use external service?

An external source will be sending us XML data that BizTalk will pick up and transform into an internal schema. We need this data to be loaded into a SQL Server database as we're going to expose some ...
dlongest's user avatar
  • 125
10 votes
1 answer
505 views

Clarification about Event Producer in StreamInsight

I need a small clarification about StreamInsight, I know by doc's that StreamInsight can handle multiple concurrent Events. But will the event producer be a separate function, for ex: I need to watch ...
sandy's user avatar
  • 201
9 votes
0 answers
211 views

Is there any guideline from Unicode on how to deal with graphemes that have no base character?

A valid sequence of code-points can begin with one or more combining mark, which form a grapheme cluster that has no base glyph. I'm unsure how that should be handled, if at all. For example, consider ...
Wes's user avatar
  • 842
9 votes
1 answer
742 views

Design thoughts on a schema based request object for CXF endpoint

Trying to seek design suggestion on a schema based request object for a CXF endpoint. I've created a CXF SOAP endpoint which takes the following object as an input. The request object will have ...
Shamik's user avatar
  • 191
9 votes
1 answer
434 views

Should I be concerned with dependencies?

Our organization uses IBM ClearCase to manage its versioning controls (for better or worse). We've been working on our application for several years now, and a large number of activities have started ...
Zibbobz's user avatar
  • 1,552
8 votes
1 answer
4k views

ElasticSearch vs SQL Server full text index for small datasets?

I've got a relatively high-traffic public-facing product-based website backed by SQL Server as the point of authority. It has some search capability on some of the columns of the Items table (year, ...
Jorick918's user avatar
8 votes
0 answers
155 views

XDIME for Mobile Applications

I'm involved in a project that requires to mobile-enable some previously developed Portlets. The Portlets are deployed in WebSphere Portal, and the container offers a technology called IBM Mobile ...
Carlos Gavidia-Calderon's user avatar
8 votes
2 answers
300 views

Proxying REST Backends

I have several backend services (REST+SOAP) that have to be consumed by a SPA (Single Page Angular2 App). As JWT (JSON Web Token) is not feasible for me for the moment, security is done using CAS ...
Cris's user avatar
  • 313
8 votes
2 answers
359 views

Should an interface covariant on T ever implement an interface invariant on it?

I was reading through the Hacklang docs on Collections, and came across this curious definition [paraphrased slightly]: interface KeyedIterable<Tk, Tv> ... interface ConstVector<+Tv> ...
concat's user avatar
  • 517
8 votes
1 answer
1k views

Alternatives to Pessimistic Locking in Cluster Applications

I am researching alternatives to database-level pessimistic locking to achieve transaction isolation in a cluster of Java applications going against the same database. Synchronizing concurrent access ...
amphibient's user avatar
  • 1,591
7 votes
0 answers
261 views

Fortran-Python Interface

Disclaimers: This question is reposted from SO upon SO user's suggestion to put it here since there is no specific code in question. This question is a subset of my larger theme of Fortran ...
ximiki's user avatar
  • 345
7 votes
0 answers
3k views

Getting AWS SNS Messages into Azure Service Bus

I have a similar question to one already asked about SQS to Azure Service Bus - https://stackoverflow.com/questions/51650073/consume-aws-sqs-and-publish-to-azure-service-bus. I want to get messages ...
GRoberts's user avatar
7 votes
1 answer
1k views

Git Flow w/ VSTS Build Pipelines

I am trying to marry the git flow approach (w/ dev, test, uat, staging, prod env) & automated build and releases in Visual Studio Team System (VSTS). Slightly struggling due to VSTS needing a ...
m1nkeh's user avatar
  • 247
7 votes
0 answers
388 views

Rust and lifetime elision rules for structs?

In the Rust documentation, under the structs section, they give this example of how structs need lifetimes when they contain references: struct Foo<'a> { x: &'a i32, } because We ...
user avatar
7 votes
0 answers
255 views

Why does GHC represent recursion in Haskell with recursive binders instead of a fixpoint operator?

GHC's Core data type represents recursion with recursive binders in the Let constructor; as I understand it, all let expressions in Haskell are effectively let rec expressions. Why does GHC use this ...
DylanSp's user avatar
  • 265
7 votes
0 answers
192 views

Incorporating existing 2D OpenCL/OpenGL application in 3D scene

There is an existing real-time, scientific visualization application that uses OpenCL and OpenGL to render complex 2D graphs. My goal is to incorporate this application into a 3D rendered scene. At ...
Liam Kelly's user avatar
7 votes
0 answers
124 views

Intuitive dependency management with code includes?

I am building a PHP CMS system that parses template files and replaces tags with content. Sometimes this content is a HTML, CSS or JS snippet, but it can also be a code include. Most code includes ...
PIDZB's user avatar
  • 233
7 votes
0 answers
1k views

Zeromq bidirectional asynchronous transmission?

I have a system which consists of two applications. Currently, two applications communicate using multiple zeromq publish/subscribe sockets generated for each specific type of transmission. Sockets ...
blackmore_24's user avatar
7 votes
0 answers
120 views

Relationship between a mixin and its master invokation

I haven't studied Smalltalk or Strongtalk and am just trying to get an overview of the semantics of interfaces and polymorphism in O/O languages, particularly Dart. In the 2002 paper titled Mixins in ...
Tom Russell's user avatar
7 votes
1 answer
481 views

Maintenance Complexity of Gradle build scripts

I am currently trying out Gradle for my embedded development project. The existing tool is GNU Make. Across the internet I have read a lot of articles where people say that their build logic becomes "...
Müller's user avatar
  • 171
7 votes
2 answers
163 views

Which data structures and algorithms should I consider for a directed rooted tree that has high churn?

I need to represent a directed rooted tree in memory. What would be a good data structure and algorithms for performing main actions, given the particulars listed below? Size: ~40,000 nodes. But ...
DVK's user avatar
  • 3,586
6 votes
0 answers
233 views

Is it possible to use a reverse proxy authentication in a native mobile app

We have a few backend services that our frontend SPAs fetch data from. Right now, the SPAs use JS libraries to authenticate with the Auth server (Azure AD) which returns a JWT which is validated by my ...
Sayak Mukhopadhyay's user avatar
6 votes
0 answers
155 views

Rounding floats after modf()

I am trying to make an effective modf() function that uses floats instead of doubles. An embedded application I am working on only supports the float type. My modf() function works as expected with ...
user264480's user avatar
6 votes
0 answers
377 views

Rails on AWS Elastic Beanstalk - limitations

I have been looking at AWS Elastic Beanstalk service for the deploymeny of my rails application, and I came to think it was actually a bad idea given some specific requirements of my application. But ...
Cyril Duchon-Doris's user avatar
6 votes
0 answers
700 views

Feature Toggles for Front-end Redesign

We are planning a redesign of our front-end and would like to roll it out using a feature toggle. We want to expose the changes to limited sets of users as we iterate and perhaps allow users to opt ...
andyk's user avatar
  • 161
6 votes
0 answers
7k views

Assembler vs Entity Translator and Entities vs DTO

I was hoping that someone could explain the exact difference between an Assembler and Entity Translator. Martin Fowler describes the Assembler as a sort of Mapper(?) which converts DTOs into Domain ...
user2308097's user avatar
6 votes
0 answers
3k views

Is this Auto-Updating strategy for a program in C++ compiled with mingw32 for Windows correct?

I 've been thinking a lot on auto-updating, but wanted to check with you guys if you see any anti-patterns in my proposal: Context I'm coding a game in C++ and SDL, compiled in an Ubuntu (host) for ...
Xavi Montero's user avatar
6 votes
0 answers
2k views

How to tell SignalR Notifications Hub that there is a new notification without having SignalR poll on that table

I'm developing a push-notifications system for my ASP.NET MVC app. The idea is to use Redis for queueing, ServiceStack for queue processing and SignalR for push-notifications to implement a system ...
Sergei's user avatar
  • 161
6 votes
0 answers
2k views

Entity Framework - Loading Related Entities Explicitly

I have been using Entity Framework for a few years. I have flip-flopped between calling out to repositories in my business logic or using lazy loading to retrieve data as I work my way through the ...
Travis Parks's user avatar
  • 2,515
6 votes
1 answer
13k views

Should I mock ObjectMapper in my unit tests?

I have different services in a spring application that have a dependency on Jackson ObjectMapper, the unit tests rely on @InjectMocks to inject all the various dependencies to the class that is under ...
Pampa Nello's user avatar
5 votes
0 answers
862 views

GitHub flow: how do I test my changes that cannot be tested locally?

I am trying to start using GitHub flow in my project. I like that it is simple and, more importantly, it encourages continuous delivery. However, there is one thing about this flow that I cannot ...
yaskovdev's user avatar
  • 169
5 votes
0 answers
608 views

How to OCR and/or recreate lines of Egyptian Hieroglyphs in Unicode/HTML?

I am wondering how to take these Hieroglyphs and make them into Unicode. I read through the Tesseract docs on how to create training data, but it seems largely tailored toward "traditional" ...
Lance's user avatar
  • 2,587
5 votes
0 answers
224 views

How to protect potential attackers from finding emails that are already registered?

It seems common practice to not positively indicate during a password reset attempt whether the email requested is actually registered or not. This makes sense because knowing that an email is ...
QuietSeditionist's user avatar
5 votes
0 answers
962 views

How to implement micro-frontends with Native Apps?

I'm working with Web (react) and Mobile (IOS, Android) teams. And I find that even with a microservices architecture we end up always doing duplicated work at the front end/client level. How to ...
Txugo's user avatar
  • 151
5 votes
0 answers
903 views

Identity and access management in Clean Architecture and MVC design

The application user has a lot of standard functionality we see in most applications. At a high-level, this includes some form of authentication, authorization, and session management. At a low-level, ...
NLuburić's user avatar
  • 191
5 votes
1 answer
2k views

Using PostgreSQL MD5 hash to calculate a 64 bit hash value for advisory lock functions?

I have a particular problem addressing the PostgreSQL advisory locking functions using the bigint variants. Basically I want to create a 64 bit bigint value from a text type obtained with the ...
πάντα ῥεῖ's user avatar
5 votes
0 answers
57 views

Decoupling redux reducer tests from state shape

Recently I have been refactoring state shape in a fairly large redux application, and I have found that one of the obstacles to doing to is that the tests for my reducers clearly have a lot of "...
samfrances's user avatar
  • 1,085
5 votes
0 answers
1k views

Efficiently sharing a large node_modules directory between TeamCity build agents

The CI flow for our Node.js app looks roughly like this: Currently, this all takes place in a single TeamCity 'job' with three 'steps' (the Test step runs 4 concurrent child processes). Problems ...
callum's user avatar
  • 10.4k
5 votes
1 answer
589 views

Applying Domain Driven Design - Model/Implementation

I'm quite new in the DDD-World and I'm just trying to figure out all the basics so please bear with me! I have the following Entities: - Datamodel - Object Types - Object Fields A datamodel can ...
w0wka91's user avatar
  • 59
5 votes
0 answers
196 views

What are best practices for deploying different configurations per environment in Kubernetes/OpenShift?

Kubernetes provides a very elegant mechanism for managing configuration for pods using ConfigMaps. What's not clear from the documentation is what the recommended practice is for using ConfigMaps to ...
arosca's user avatar
  • 151
5 votes
0 answers
480 views

Using C# to implement an F# type provider

I am in a situation where I believe type providers would be useful. Consuming type provider in F# could be the way I finally dip my toes in F#. However, I understand that writing type providers is ...
Tormod's user avatar
  • 359
5 votes
3 answers
1k views

Handling common code among presenters

I'm facing some issues related to code duplication when following MVP architectural pattern in an Android project that I'm working with. My project structure is separated by packages: data, domain, ...
learner's user avatar
  • 167
5 votes
0 answers
2k views

Understanding the data flow in Spring REST layered architecture

I am new to Spring as well as layered architecture. So am a bit confused as how data flows among the different layers. What so far I have understood is: Layers: Controller (which accepts requests) ...
Jignesh M. Khatri's user avatar
5 votes
0 answers
521 views

Graph Database, Storing Transactions

I'm working on getting a handle on Graph Databases (using Neo4j) and am trying to wrap my head around where "the line" is between what makes a good fit for GraphDBs and what should be strictly RDBMSs. ...
jleach's user avatar
  • 2,682
5 votes
0 answers
168 views

Can integration tests be run asynchronously with Maven?

Because I work at a company with lots and lots of computers, I find it to be a little ironic that it takes half an hour to cut a release of the latest version of our software. The bottleneck seems ...
Peter Turner's user avatar
  • 6,897

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