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So I have a design question, I was reading about Dependency Injection on fsharpforfunandforprofit.com and the article said that hidden dependencies on local methods is a problem. That got me thinking, “Just how decoupled does a function need to be from the domain?” I made a contrived example here where the function lotsOfChickens depends onRead more

Let’s say my app depends on lib A that depends on B that depends on C (we are owners of them all). Now, you bump the version of C to 1.0.1 (a bug fix). How would you propagate the change of C to the app? Would you bump versions of B and A, too? WhatRead more

I have a set of services that are used to read/write to the database. These get injected into my controllers: ISystemSettingService _systemSettingService = null; IStatusTypeService _statusTypeservice = null; public MyController( ISystemSettingService systemSettingService, IStatusTypeService statusTypeservice) { _systemSettingService = systemSettingService; _statusTypeservice = statusTypeservice; } So when I need something from _systemSettingService I can easily get it. NowRead more

While trying to solve an issue, explained on the StackOverflow forum, somebody advised me to use dependency injection. For personal reasons, the moment a person mentions to me the usage of a design pattern, I always start thinking of very difficult constructions. After some thinking and investigating, I’ve invented following construction on my own (pseudo-code):Read more

Quais são as dependências necessárias para as seguintes bibliotecas? import java.io.StringReader; import java.net.Authenticator; import java.net.PasswordAuthentication; import java.util.ArrayList; import java.util.List; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.soap.MessageFactory; import javax.xml.soap.MimeHeaders; import javax.xml.soap.SOAPBody; import javax.xml.soap.SOAPConnection; import javax.xml.soap.SOAPConnectionFactory; import javax.xml.soap.SOAPElement; import javax.xml.soap.SOAPEnvelope; import javax.xml.soap.SOAPException; import javax.xml.soap.SOAPMessage; import javax.xml.soap.SOAPPart; import javax.xml.transform.OutputKeys; import javax.xml.transform.Source; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMResult; import org.w3c.dom.Document;Read more

I am building a fleet unit gps system and currently and i need to figure out how to link my objects. Here is the scenario: Each fleet unit may have attached one or more gps devices. Each fleet unit may have one or more engines. Each fleet unit’s engine may have one or two fuelRead more

Since I’ve started developing with Magneto 2 I’ve noticed the compiling the dependency injector with bin/magneto setup:di:compile can take 40 seconds and up to 1 min 20s with xdebug enabled. I have an Intel i5 CPU M460 2.53GHz running php 7.1.11 on Ubuntu 17.10, not using docker or any VM. Is 40 seconds a normalRead more

I am trying to use mvn package to build a Cytoscape app. It has EKZTAZI 5.0.1. as a dependency. However, I get the following error: Execution ekstazi of goal org.ekstazi:ekstazi-maven-plugin:5.0.1:select failed: Runn ing with Java 9 requires -Djvm.options=jdk.attach.allowAttachSelf=true I am unsure on where to pass this option. I tried searching for a solution and everythingRead more

I have the following pure function (f2 and f3 are pure too): class X { def f1(arg: Type1): Type2 = { val x = f2(arg) val y = f3(x) y } def f2… def f3… } Now, I would like to move f2 and f3 and can think of 2 options to do so. WonderingRead more

There exist a number of articles/blogs explaining the Dependency Inversion Principle (DIP) using Swift; to name a few (top Google hits): GitHub/ochococo/OOD-Principles-In-Swift – The Dependency Inversion Principle, clean-swift.com / Dependency Inversion – A Little Swifty Architecture Now, Swift is widely described (even by Apple) as a protocol-oriented programming language, rather that an OOP language; soRead more