How can I test that ConcurrentHashMap is truly thread-safe?

Just learning more about threads and concurrency, and thought of playing around with a regular hashtable and a ConcurrentHashMap. What would be a good way to test for concurrency for these...

How to insert PHP into jQuery

Here is my code to insert PHP into jQuery $(document).ready(function () { if (<?php echo $story->getStoryCategory()->getStoryCategoryName();?> == "Politics") { ...

Nginx upstream timed out

So I have recently installed nginx and now It is giving me some kind of error and closing nginx every like.. 2 hours? How can I fix it? I am getting the same error just before it closes in the...

R - Draw text in graph based on axis limits to avoid collision

The wordcloud library in R provides a neat way of visualizing a bag of words. I'm doing latent semantic analysis and want to to visualize spatially organized words. I've been reworking the...

Unexpected async behavior: Springs's @Async vs RxJava

I' playing around with Spring, RxJava and non blocking data processing. In my test applications I want to implement the following test work flow: [RT] Receive request [RT] Start processing...

Getting football(soccer) stats with R

TL;DR: most of this post consists of example that I've included to make as clear as possible, but the core of the question is contained in the middle section "The Actual question" where examples...

Uncaught ReferenceError: war is not defined

I am trying to make a make a simple card game web application. When trying to run the war.refillDeck() function from the button click I receive the following error in my console: Uncaught...

Access 3rd party JS functions from angular service

I am trying to access a javascript function loaded outside of angular in index.html. This is because google-tts for node doesn't install on the pi. I want to use a js version of google-tts to pass...

apache 2.4 on fresh fedora: AH01630: client denied by server configuration

I've seen hudreds of questions like this and most of them end up in changing the syntax to latest Apache version or messing up with .htaccess. But not in my case since I used fresh F23 install and...

Android - AnalyticsReceiver is not registered or is disabled?

I am using google analytics but when I debug with adb show me these messages. 05-11 14:57:48.911 1681-1912/? W/GAv4-SVC: Network compressed POST connection error: java.net.ConnectException: failed...

Issue trying to stream RTSP to RTMP (live) through NGINX

I want live RTMP streaming through nginx. I setup this server on a public ip (linux - CentOS), using this tutorial: https://notehub.org/rcfdu. My target is: RTSP source -> transcode to RTMP ->...

HBase/Hive table queried from Squirrel SQL - Error in loading storage handler.org.apache.hadoop.hive.hbase.HBaseStorageHandler

I am trying to query a HBase table through Squirrel SQL. Created a Hive external table like the following create external table tweets_hbase(key string, value string) stored by...

Android - Google Analytics V4 event sent but not shown

I want to integrate Google Analytics SDK V4 in my app but I have a problem sending events. I integrated the SDK and generated the configuration file as indicated on the offical documentation. I...

How do I read a cookie value WITHOUT regex?

I'm helping a nonprofit design a trilingual website: English, French, and Haitian Creole. I've been able to set, change, and delete cookies for the visitors' language choice -- that part isn't...

Query Intel CPU details of execution unit, port, etc

Is it possible to query the number of execution unit/port per core and similar information on Intel CPU? I have an assembly program, and noticed that the performance is quite different on...

Python - Beginner Scraping with Beautiful Soup 4 - onmouseover

i'm a beginner python (3) user and i'm currently trying to scrape some sports stats for my fantasy football season. Previously I did this in a round about way (downloading in HT-track, converting...

KeyNotFoundException when execute proxygen in jni4net

I realise an implementation to connect C# with Java through jni4net. I generated a test class with C# ( conversion the cs file to dll) and called from Java, works fine. My problem is with a dll;...

Preload and auto play Vimeo videos in viewport AND fade cover image

I am trying to use the Vimeo API with froogaloop2 to autoplay several embedded iframe videos on the page when scrolled into viewport. I want to make sure the videos are loaded before the cover...

Chromecast streaming issue (DOMException: Failed to load because no supported source was found)

I am trying to cast to this cast receiver ID: CB2BD90D This is a custom styled receiver. The video URL to cast: https://s3-ap-southeast-1.amazonaws.com/ht-brightcove/FinAAC_V1/playlist.m3u8 This...

Deploying Play 2.5 to AWS using EB

I have followed the steps for the template of elastic beanstalk from here : https://github.com/kipsigman/play-elastic-beanstalk However , when I reach to the step of : sbt...

How to create a pause function when pressing a key

I am trying to invent a function that will pause a game when pressing P. I also want it to be shown on the screen while the game is running. However, I do not know how to continue my function....

How to Integrate Alexa Voice Service to Custom Android App

I am planning to develop an Android App with Alexa Voice Service integration to develop an app like Reverb. Below is what I have tried... Checked AVS Device SDK, could get a proper guide to...

UI5 - Unable to Bind JSONModel with XML view

I'm trying to use a external JSON file to bind data into a XML View in SAP WebIDE. And here is the code I'm using view1.xml <mvc:View controllerName="com.db.DataBinding.controller.View1"...

Reducing spin times in OpenMP parallel for

We are writing a performance critical application, which has 3 main parameters: N_steps (about 10000) N_nodes (anything from 20 to 5000) N_size (range about 1k-10k) The algorithm has essentially...

Performance of big slabs due to allocation, initialization and deallocation overhead costs [C++11]

I have found in running performance analysis of various string classes, that the allocation, initialization and deallocation overhead costs due to fine-grained allocators more tuned for thread...

Screen freezes when using Record Espresso

I've been trying to use record espresso for a few hours now, but I just can't make it work on the project. I've added: androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' And...

How to launch a turtle program with a tkinter messagebox?

I am trying to launch a turtle game stored in one file with a message box from tkinter stored in another py file but both in the same directory. However, I receive a _tkinter.TclError: image...

How can i remove this symbol from this JSON string?

How can i remove the "-" from this JSON string? If I do .replace("-","") it will remove "-" from everywhere. nothing is showing on screen without any...

VLCJ: A fatal error has been detected by the Java Runtime Environment just after 1 second of playback

Here's code: /* * This file is part of VLCJ. * * VLCJ is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free...

OAUTH 2 - Box API - Python - HOW DO I INJECT THE JSON TOKEN?

I am trying to play with the Box API, I have set up the local SDK, authorized the API token, and I think I have this mostly correct, my only issue is that the developer toke (which is a .JSON file...

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