Read-Write lock with GCD

Read-Write lock with GCD

My application makes heavy use of GCD, and almost everything is split up in small tasks handled by dispatches. However, the underlying data model is mostly read and only occasionally written. I currently use locks to prevent changes to the

Running multiple projects using docker which each runs with docker-compose

Running multiple projects using docker which each runs with docker-compose

We are using microservices approach to build our product. We are using some projects which each uses docker-compose to run. The problem is that in development environment, if we want to change codes in multiple projects and test developed c

Error sending e-mail via SMTP server on App Engine development server

Error sending e-mail via SMTP server on App Engine development server

I am trying to send Email using this sample code and these command-line options:dev_appserver.py --smtp_host=smtp.gmail.com --smtp_port=25 [email protected]_password=k1tt3ns myappHowever, I receive the following error when my

Dart: default gitignore?

Dart: default gitignore?

I created a new app and the Dart Editor (M4) created a slew of files and folders. Now I'm not sure which I can safely put in the gitignore. Here's the tree:app/.buildlogapp/build.dartapp/packages/analyzer_experimentalapp/packages/argsapp/pa

Execute CMD commands using C++

Execute CMD commands using C++

In my project I want to execute some CMD commands. What is the syntax for doing that using C++. 1:You can execute Windows Command prompt commands using a C++ function called system();. For safer standards you are recommended to use Windo

Jersey: @Consumes doesn't quite work when content-type is not set

Jersey: @Consumes doesn't quite work when content-type is not set

I'm trying to figure out how @Consumes works here.I have a simplified resource that looks like the below, and I only want this resource to consume "application/vnd.myApp+xml". @Path("/app")@Consumes("application/vnd.myApp+xml")@Produces("ap

Memory mapping of files vs CreateFile/ReadFile [closed]

Memory mapping of files vs CreateFile/ReadFile [closed]

What are the drawbacks (if any) of using memory mapped file to read (regular sized files) over doing the same using CreateFile ReadFile combination? 1:With ReadFile/WriteFile you have deterministic error handling semantics. When you use

How to get classloader for a bundle in equinox?

How to get classloader for a bundle in equinox?

I have read a lot of equinox code for this, but still can't figure out a non-hacky way of getting the classloader for a osgi bundle in eclipse equinox setup. Is there one? 1:The short answer (certainly for OSGi 4.1, not sure of 4.2) is y

Android voice recognition API offline

Android voice recognition API offline

Can someone please help me? I am developing an application with voice recognition via RecognizerIntent.Which Android version brought in officially the offline recognition available to apps by API? Is there any statement about it?By what I r

Play full spotify track inside my own website using spotify web api

Play full spotify track inside my own website using spotify web api

So I was taking a look at the spotify web api and it apparently allows you to play a preview of the song, but I was wondering if there is any way to play the full spotify song without having to open up the official spotify web player or des

Requesting user to rate/review/comment on Android Market

Requesting user to rate/review/comment on Android Market

Is there a way I can request user for a rating/review/comment for the application from within the application (Activity). One option I can think is to create a link in the application to Android market where user can enter review/rating/com

Chrome debugger - how to turn off console.log message grouping?

Chrome debugger - how to turn off console.log message grouping?

Say, in my Google Chrome extension I do this:console.log(msg);and the Chrome debugger groups similar messages like so:Is there any any to turn it off and have messages post just as they are? 1:It only collapses consecutive rows that are

Magento api: Invalid webservice adapter specified

Magento api: Invalid webservice adapter specified

Is there anything specific i need to do to get the api in magento working?I am visiting /api/soap/?wsdl on my local installation (1.7) and it returns the following error:Invalid webservice adapter specified.Everything looks enabled in the s

Package signatures do not match the previously installed version

Package signatures do not match the previously installed version

This my project: https://github.com/kenpeter/my_hak_news, which is a direct copy of https://github.com/grigio/HAgnostic-News.Git clone https://github.com/kenpeter/my_hak_news, then run react-native run-androidGot this error:* What went wron

Django REST Framework - Serializing optional fields

Django REST Framework - Serializing optional fields

I have an object that has optional fields. I have defined my serializer this way:class ProductSerializer(serializers.Serializer): code = serializers.Field(source="Code") classification = serializers.CharField(source="Classification",

Find process id by window's handle

Find process id by window's handle

i have a problem with getting a specific PID of a process, the problem with this process is that it's a hidden process, it's not showing on task manager / powershell, completely hidden.what i have do far is the main window handle of this pr

What is the difference between MinGW, MinGW-w64 and MinGW-builds?

What is the difference between MinGW, MinGW-w64 and MinGW-builds?

What are the differences between MinGW, MinGW-w64 and MinGW-builds?And which one should I use to compile c++ 11 source code with the Eclipse IDE on a Windows 8 machine? 1:MinGW is a GCC-port for Windows. Not all of the Windows API is sup

ajax timeout callback function

ajax timeout callback function

Is there a way to run a function if jQuery's $.ajax function hits it's timeout?i.e.$.ajax({......,timeout:1000(){do something if timeout)...}); 1:$.ajax({ ... timeout: 1000, error: function(jqXHR, textStatus, errorThrown) {

How to include null value in the JSON via NSJSONSerialization?

How to include null value in the JSON via NSJSONSerialization?

I think I get it how to use the NSJSONSerialization over all. The call I am making is: [NSJSONSerialization dataWithJSONObject:parameters options:0 error:&error]where parameters is a NSDictionary which includes keys and values to use in the

What count as a Parse request?

What count as a Parse request?

Because of the change of Terms, Parse now limits the number of requests a second, which is a good thing but does Parse Push and Parse Analytics count as requests ? 1:Anytime you make a network call to Parse on behalf of your app via the

Sockets in MinGW

Sockets in MinGW

I was just trying to build netcat in MSYS using MinGW and realized that MinGW never really ported all of the BSD socket stuff to Windows (eg sys/socket.h). I know you can use Windows Sockets in MinGW, but why did they never make a Windows

Filter dependencies copied by Maven's copy-dependency?

Filter dependencies copied by Maven's copy-dependency?

I need to essentially accomplish the following:Build my library into a JAR. (Easy, already done.)Copy my library's dependencies to a local folder, including the main project JAR, excluding dependencies marked as provided.I can't seem to get

Spring security authorize request for url & method using HttpSecurity

Spring security authorize request for url & method using HttpSecurity

Is there any way to authorize post request to a specific url using org.springframework.security.config.annotation.web.builders.HttpSecurity ? I'm using HttpSecurityas: @Override protected void configure(HttpSecurity http) throws Excep

What does onPrepareOptionsMenu do?

What does onPrepareOptionsMenu do?

I want to make Option Menu for Android, I have visit this site. In their script, I found onPrepareOptionsMenu, I try to compile and run using Android 2.3.3 compiler with and without onPrepareOptionsMenu, both works, but I didn't see any dif

Building with Lombok's @Slf4j and Intellij: Cannot find symbol log

Building with Lombok's @Slf4j and Intellij: Cannot find symbol log

I have a maven project that builds with no problems from the command line. However, when I build it with IntelliJ, I get the error:java: FileName.java:89: cannot find symbolsymbol : variable logThere is no log defined or imported in the ja