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c# - The instance of entity type cannot be tracked because another instance of this type with the same key is already being tracked

I have a Service Object Update public bool Update(object original, object modified) { var originalClient = (Client) ... ) .AsNoTracking(); } See Question&Answers more detail:os...

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audio - Android: Need to record mic input

Is there a way to record mic input in android while it is being process for playback/preview in real time? I ... the mic input in real time. See Question&Answers more detail:os...

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Android gradle: buildtoolsVersion vs compileSdkVersion

What's the difference between buildtoolsVersion vs compileSdkVersion in the build.gradle for an Android project? EDIT: ... the build tool is? See Question&Answers more detail:os...

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Web Service vs WCF Service

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Django - filtering on foreign key properties

I'm trying to filter a table in Django based on the value of a particular field of a ForeignKey. For example ... of filtering in the main query? See Question&Answers more detail:os...

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python - Find the unique values in a column and then sort them

I have a pandas dataframe. I want to print the unique values of one of its columns in ascending order. This ... getting a None for the output. See Question&Answers more detail:os...

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java - Spring Boot: Cannot access REST Controller on localhost (404)

I am trying to adapt the REST Controller example on the Spring Boot website. Unfortunately I've got the following ... access the method via URL? See Question&Answers more detail:os...

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java - Is stopwatch benchmarking acceptable?

Does anyone ever use stopwatch benchmarking, or should a performance tool always be used? Are there any ... system scheduling when benchmarking? See Question&Answers more detail:os...

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objective c - Storing images locally on an iOS device

Some iOS photo-related apps store images created with the app somewhere other than the photo library. For example ... Data is the easiest way. See Question&Answers more detail:os...

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viewflipper - Developing an Android Homescreen

I am working on an app that has a homescreen. This homescreen should behave like the android homescreen where you ... UI element. Any ideas? See Question&Answers more detail:os...

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java - Environment Variable with Maven

I've ported a project from Eclipse to Maven and I need to set an environment variable to make my project work. In ... can I do this with Maven? See Question&Answers more detail:os...

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React-Native, Android, Genymotion: ADB server didn't ACK

I am working with React-Native, Android, and Genymotion on Mac. When I run react-native run-android I get this ... the same issue? Thanks, Paul See Question&Answers more detail:os...

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c# - How to add a string to a string[] array? There's no .Add function

private string[] ColeccionDeCortes(string Path) { DirectoryInfo X = new DirectoryInfo(Path); FileInfo[] listaDeArchivos = X. ... can I do this? See Question&Answers more detail:os...

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javascript - Embedding SVG into ReactJS

Is is possible to embed SVG markup into a ReactJS component? render: function() { return ( <span> <svg version="1 ... for what I'm trying to do. See Question&Answers more detail:os...

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java - How to extract IP Address in Spring MVC Controller get call?

I am working on Spring MVC controller project in which I am making a GET URL call from the browser - Below is ... . Is this possible to do? See Question&Answers more detail:os...

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javascript - How to move table row in jQuery?

Say I had links with up/down arrows for moving a table row up or down in order. What would be the most ... plugin previously) isn't an option. See Question&Answers more detail:os...

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r - Solution. How to install_github when there is a proxy

When you try to install some package of R from GitHub's repository install_github('rWBclimate', 'ropensci') If ... on Intenet through a proxy. See Question&Answers more detail:os...

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php - How to delete object from array inside foreach loop?

I iterate through an array of objects and want to delete one of the objects based on it's 'id' property, but ... } } } Any suggestions. Thanks. See Question&Answers more detail:os...

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javascript - Image resize before upload

I need to provide a means for a user to upload photos to their web site in jpeg format. However, the ... that do this will be appreciated. See Question&Answers more detail:os...

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android - SurfaceView flashes black on load

I have a drawing app that takes about 2-5 seconds to load the drawing for complicated drawings (done via an ... to try, please post them. See Question&Answers more detail:os...

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ios - UIRefreshControl - beginRefreshing not working when UITableViewController is inside UINavigationController

I've setup a UIRefreshControl in my UITableViewController (which is inside a UINavigationController) and it works ... any suggestions? Thanks See Question&Answers more detail:os...

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Differences between "git pull" commands when pulling from origin?

What are the differences between these commands?: # 1 git pull # 2 git pull origin # 3 git pull origin master ... 5 git pull origin HEAD:master See Question&Answers more detail:os...

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How do I put two increment statements in a C++ 'for' loop?

I would like to increment two variables in a for-loop condition instead of one. So something like: for (int i ... What is the syntax for this? See Question&Answers more detail:os...

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android - How to update/refresh specific item in RecyclerView

I'm trying to refresh specific item in RecyclerView. Story: Whenever user clicks on item, it shows AlertDialog. ... correctly by clicking on it? See Question&Answers more detail:os...

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asp.net - How to set up subdomains on IIS 7

I have a website sitting on an IIS 7 server: WWW.example.COM I would like to create several sub domains that ... to do something with the DNS? See Question&Answers more detail:os...

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python - How to copy data from a numpy array to another

What is the fastest way to copy data from array b to array a, without modifying the address of array a. I need ... to do it without a loop? See Question&Answers more detail:os...

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java - Spring - No EntityManager with actual transaction available for current thread - cannot reliably process 'persist' call

I get this error when trying to invoke "persist" method to save entity model to database in my Spring MVC web ... ; return "index"; } } See Question&Answers more detail:os...

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python - Iterate over the lines of a string

I have a multi-line string defined like this: foo = """ this is a multi-line string. """ This string ... find nothing that suits this need. See Question&Answers more detail:os...

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