All Questions

6,725,969 questions with no upvoted or accepted answers
306
votes
0answers
7k views

Managing the lifetimes of garbage-collected objects

I am making a simplistic mark-and-compact garbage collector. Without going too much into details, the API it exposes is like this: /// Describes the internal structure of a managed object. pub struct ...
229
votes
0answers
2k views

GStreamer Editing Services freezes when transitions are added

I'm trying to use Gstreamer's GStreamer Editing Services to concatenate 2 videos, and to have a transition between the two. This command, which just joins 2 segments of the videos together without a ...
175
votes
0answers
8k views

SNIReadSyncOverAsync Performance issue

Recently I used dot Trace profiler to find the bottlenecks in my application. Suddenly, I have seen that in most of the places which are taking more time and more cpu usage to is ...
151
votes
0answers
967 views

ember-cli-code-coverage mocha showing 0% coverage when there are tests

I'm using ember-cli-code-coverage with ember-cli-mocha. When I run COVERAGE=true ember test I'm getting 0% coverage for statements, functions, and lines. Yet, I have tests that are covering those ...
125
votes
0answers
1k views

Sneaking lenses and CPS past the value restriction

I'm encoding a form of van Laarhoven lenses in OCaml, but am having difficulty due to the value restriction. The relevant code is as follows: module Optic : sig type (-'s, +'t, +'a, -'b) t val ...
99
votes
0answers
2k views

How to setup workers for parallel processing in R using snowfall and multiple Windows nodes?

I’ve successfully used snowfall to setup a cluster on a single server with 16 processors. require(snowfall) if (sfIsRunning() == TRUE) sfStop() number.of.cpus <- 15 sfInit(parallel = TRUE, cpus = ...
88
votes
1answer
4k views

React Native app stuck on blank white screen with remote debugging using Nuclide

Steps to Reproduce / Screenshots Apply all operations from the instruction: Create a blank React Native project with $ react-native init [project name]. From the command Palette (Cmd-Shift-P), ...
87
votes
0answers
1k views

Troubles using WebRequest in Mono

I have a really strange problem with WebRequest in a ServiceStack web application (hosted by XSP on Mono). It seems that the registration of request modules works in a very strange way; I am using ...
83
votes
1answer
1k views

Inconsistent behaviour with tm_map transformation functions when using multiple cores

Another potential title for this post could be "When parallel processing in R, does the ratio between the number of cores, loop chunk size, and object size matter?" I have a corpus I am ...
75
votes
0answers
2k views

memory bandwidth for many channels x86 systems

I'm testing the memory bandwidth on a desktop and a server. Sklyake desktop 4 cores/8 hardware threads Skylake server Xeon 8168 dual socket 48 cores (24 per socket) / 96 hardware threads The peak ...
67
votes
2answers
1k views

Eclipse on MAC OS X Does not detect LLVM toolchain

I'm trying to work with eclipse to compile/debug C/C++ applications on MAC OSX using LLVM/Clang. I know I have the toolchain correctly installed as I can compile with it from the terminal using a ...
66
votes
0answers
4k views

Implementing VPN with L2TP protocol in iOS app

In iOS settings there are options to create VPN configuration using IPSec, IKEv2 and L2TP. Using NetworkExtension framework from Apple there's option to create VPN using IPSec and IKEv2 protocols only....
63
votes
0answers
2k views

Sinch API in an Angular 2 project times out on onCallProgressing

We implemented Sinch in an angular 2 web application. Everything works fine, except when I try to call a user using the sinch phone demo. When the app is running in the foreground it will ring and the ...
63
votes
0answers
3k views

Successful purchase but has "Class not found" when unmarshalling: com.google.android.finsky.billing.lightpurchase.PurchaseParams

I have an app with In-App Billing in its Adapter (list of items to buy). I am having a problem during testing of the in-App Billing. Everything works fine - The user is able to go through the whole ...
63
votes
2answers
4k views

Android Youtube Player API activity finish and create

We have used the YouTube API for android, but there is a problem with a fast closing and opening the same activity with the YouTube player and the YouTube player view. This problem appears in the ...

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