std::enable_if to conditionally compile a member function

I am trying to get a simple example to work to understand how to use std::enable_if. After I read this answer, I thought it shouldn't be too hard to come up with a simple example. I want to use...

GCC: sorry, unimplemented: 64-bit mode not compiled in

I have built GCC 4.7 on my x86 32-bit linux system. When I try to cross-compile with the -m64 flag I get the following: sorry, unimplemented: 64-bit mode not compiled in while the compiler...

Name lookups in C++ templates

I have some C++ code that is no longer compiling without the -fpermissive option. It's propriety code that I can't share, but I've think I've been able to extract a simple test case that...

C++ regex string capture

Tring to get C++ regex string capture to work. I have tried all four combinations of Windows vs. Linux, Boost vs. native C++ 0x11. The sample code is: #include <string> #include...

😃 (and other Unicode characters) in identifiers not allowed by g++

I am 😞 to find that I cannot use 😃 as a valid identifier with g++ 4.7, even with the -fextended-identifiers option enabled: int main(int argc, const char* argv[]) { const char* 😃 = "I'm...

error while loading shared libraries: libstdc++.so ------ confused ..?

I have build my toolchain using following link it have , crosscompiler c++ support enabled :----- http://www.bootc.net/archives/2012/05/26/how-to-build-a-cross-compiler-for-your-raspberry-pi/ I am...

‘cout’ is not a member of ‘std’ & ‘cout’ was not declared in this scope

I realize that there are several duplicates like this but none of them have worked for me so far. I am trying to compile a C++ very simple program on Ubuntu using g++ but it is giving me scope...

'cin not declared in this scope' error upon compilation

Here is the code: #include <stdlib.h> #include <iostream> int main() { std::cout << "Enter two numbers: " << std::endl; int v1 = 0, v2 = 0; std:cin >> v1 >> v2; ...

Creating a video from images using ffmpeg libav and libx264?

I am trying to create a video from images using the ffmpeg library. The images have a size of 1920x1080 and are supposed to be encoded with H.264 using a .mkv container. I have come across various...

which version of g++ does Scons pick | unrecognized command line option "-std=c++11"

I am experiencing a problem when using Scons 2.3.0 in OpenSUSE: When I added "-std=c++11" option, I saw the error cc1plus: error: unrecognized command line option "-std=c++11" I realized that it...

Memory Leaking, I can't seem to find why

So I am writing a program for managing a heap data structure. I make two dynamic memory allocations and (I think) I free them correctly when im wrapping things up. #include...

OS X 10.9.2: checking whether the C compiler works... no

I'm attempting to install texinfo 5.2, and I'm running into some issues during ./configure, which I believe are related to the C compiler. When I upgraded from Snow Leopard, I didn't perform a...

Can't allocate class with forward declared value in std::map member variable

In test.h: #ifndef TEST_H #define TEST_H #include <map> struct Incomplete; class Test { std::map<int, Incomplete> member; public: Test(); int foo() { return 0; } }; #endif In...

fatal error: Eigen/Dense: No such file or directory

I have installed libeigen3-dev in order to compile programs using Eigen 3. when I include a file, such as Eigen/Dense I get this error when I try to run g++: [email protected]:~/Documents/prog$...

Warning vboxdrv kernel module is not loaded

Well I run this command aptitude purge ~o To delete all the Obsoletes files that aptitude show me big mistake I guess after that I update the system everything works fine but when I restart the...

How to install previous version (4.4.7) of gcc/g++ via apt-get in ubuntu 14.04?

Due to legacy issues I have to install the gcc/g++ version 4.4.7 in my current Ubuntu-gnome 14.04 32 bit virtual machine. The default update via apt-get install is the 4.8.2 which is a "no go"...

SVG transform and transition overlay with hover

I need each part of this svg map going on another one with hover. I mean when i going with mouse on each path of this , it's transform with transition and overlay on all of the other path. now...

Can't link shared library with -mx32 and gcc 4.7 or gcc 4.8

I'm trying to compile a large codebase written for a 32 bit embedded processor to run on a 64 bit desktop processor for simulation/unit testing. I need the resulting object to be a shared...

Streaming to YouTube using FFmpeg Problems

I am trying to stream to a live event I have created inside of YouTube. I am trying to stream a already created video. The command I am using is noted below. The problem I have is that YouTube is...

Correct installation of Rtools on windows

I work on windows 7 Enterprise in my office and sit behind rather strict IT rules and without admin rights. I have Rtools version 3.4.0.1962 installed under "C:\Program Files (x86)" When I try to...

undefined reference to `dlsym'

I'm trying to cross compile QT for the raspberry PI 3 under Debian Stretch but when I use make -j4 to compile QT, it gives the following error: $ make...

Undefined symbol error with -static-libasan

I use address sanitizer to sanitize my application, Which is linked with SOCI. But that prompt followijg error message while using with Oracle. ./SociUT: symbol lookup error:...

Unable to draw lines by using anime js

I m having problem with creating more paths by using anime library. I have created the text in abode illustrator and convert it to paths for anime drawing line. I can see that i m able to create 6...

SVG size in react

Hello im desperately trying to size an svg in react. No matter what i do the size stays the same even though the div containing it is much smaller. In normal html and css it would size...

How to use webpack with create-react-app?

I've created a create-react-app project following the documentation provided by create-react-app I create my project and cd into it npx create-react-app my-app cd my-app I've followed the...

Curve fitting of Monod growth/degradation equations to the experimental data

So the problem that is being faced here is the curve fitting of the Monod equations to the experimental data. The model of bacteria growth and degradation of the organic carbon looks like...

Flatten nested json in pandas

I have weather observation data received in JSON which I'd like to flatten. One Full Record The first location, contains 25 reports, Rep in 'Period' {'SiteRep': {'DV': {'type': 'Obs', ...

Animation of the image of the WINTER BASH 2020 season

WINTER BASH 2020 season is coming to an end, and I thought it would be instructive to figure out the CSS and other markup for generating the excellent logo shown here: In the image below, the...

How to install docx2pdf python module in msys2 (mingw - windows 64 bit)

I am trying to install docx2pdf module. I think that has dependency pywin32. I tried to install the last package in msys but i got this error: Χρήστος@Chris-pc MINGW64...

Docker failed with [Makefile:192: imagick_file.lo] Error 127

I try to install php in docker of w2orking project with header in Dockerfile : FROM composer:1 AS composer FROM php:7.4-fpm-alpine COPY --from=composer /usr/bin/composer /usr/bin/composer ENV...