Programmers Weekly Newsletter - Thursday, November 27, 2014

Top new questions this week: Function guaranteed to never return the same value twice This is a question I was asked at a job interview, and I can't figure out the answer they were looking for, so I'm hoping someone here might have some ideas. The goal is to write a function that is ... algorithms concurrency   asked by jay 22 votes answered by Telastyn 50 votes Should I accept empty collections in my methods that iterate over them? I have a method where all logic is performed inside a foreach loop that iterates over the method's parameter: public IEnumerable<TransformedNode> TransformNodes(IEnumerable<Node> nodes) { ... c# exceptions collections parameters   asked by Nick Udell 21 votes answered by Kilian Foth 97 votes Why is it so bad to read data from a database "owned" by a different microservice I have recently read this excellent article on the microservice architecture: http://www.infoq.com/articles/microservices-intro It states that when you load a web page on Amazon, then 100+ ... architecture web-services soa microservices modularization   asked by David 12 votes answered by back2dos 26 votes Sharing development test cases (unit and development integration) with the QA (test) team? The testing team (the so-called QA team in some organizations) insists that the development team should share their (the development team's) test cases with them. Their arguments are that the ... unit-testing teamwork integration-tests qa   asked by Sudhi Sukumaran 7 votes answered by Doc Brown 17 votes Who writes the technical 'user stories' in scrum I know that a product owner should write a user story in scrum. A user story is describing a feature for the end user. But who describes what needs to be technically developed and how it needs to be ... scrum   asked by Lisa 6 votes answered by IdeaHat 9 votes How to prevent others from using non-thread safe variables in a multithreading environment? I have an application written in C++ that was originally single threaded, but, due to the increasing complexity of this project, I'll need to expand it to at least two or three threads. There are ... c++ multithreading   asked by Annonomus Penguin 6 votes answered by IdeaHat 1 vote Why shouldn't a method throw multiple types of checked exceptions? We use SonarQube to analyze our Java code and it has this rule (set to critical): Public methods should throw at most one checked exception Using checked exceptions forces method callers to ... java exceptions static-analysis   asked by sdoca 5 votes answered by Panzercrisis 1 vote Greatest hits from previous weeks: Should I follow the normal path or fail early? From the Code Complete book comes the following quote: "Put the normal case after the if rather than after the else" Which means that exceptions/deviations from the standard path should be put ... design   asked by jao 69 votes answered by Kilian Foth 187 votes How should I remember what I was doing and why on a project three months back? I was working on a project three months back, and then suddenly another urgent project appeared and I was asked to shift my attention. Starting tomorrow, I'll be heading back to the old project. I ... project-management documentation project document-management   asked by TheIndependentAquarius 64 votes answered by CompuChip 34 votes Can you answer these? Android Development: Styling the application How do you approach theme and styling of an Android application? I have all the functionality and I'm now styling and dealing with colors, etc. This is my first big time Android app, and it seems like ... android-development   asked by David 1 vote Which languages have the best support for stackful coroutines? Various languages support (some flavor of) coroutines. One way to discriminate coroutines is whether they are stackful or not (terminology based on Ana Lucia de Moura; Roberto Ierusalimschy (2004). ... javascript python concurrency iterator   asked by Paul Klint 3 votes auto update strategy for a software distributed as a tar ball written in python 2.7 targeting mac osx This is what I have planned as an auto update strategy for a software that is as a tar ball. The application is running as a system daemon which means it have root privilege. App runs on startup ... python mac osx software-distribution   asked by k4vin 1 vote

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