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Tag: c++

getcwd() vs get_current_dir_name()?

Is it better to use getcwd(NULL, 0) or get_current_dir_name() ? What is common practice ? My uninformed guess is that a call to getcwd(NULL, 0) may be a better idea since it is possible that the PWD variable is not set… Answer Is it better to use getcwd(NULL, 0) or get_current_dir_name() ? What is common practice ? This is operating

Why this variable lies on same address

Here I have taken two local variables and printing the address of both. I am getting both addresses is same how? code is here: and the output is: here the str and arr[1] address are the same. please help me out. thank you in advance Answer In char arr[][15]={0};, the blank subscript leaves it to the compiler to calculate the

How to explicitly call the specified overload function?

Like this code, the C++ compiler will convert char* to bool and then call the first function, which is inconsistent with my original intention. Is there any way to prevent the compiler from performing type conversions that I don’t want? Like “-fno-permissive”, but unfortunately, it doesn’t work. Answer How to explicitly call the specified overload function? Convert the argument at

Can I use QFile to truncate a write protected file?

I am not running the application itself as root. Rather than do a convoluted With QProcess, I would rather simply open /sys/devices/system/cpu/intel_pstate/min_perf_pct and truncate a number into it. It would look something like this: Is there a way to do this without having to start or run any other part of the application as root? I am using pkexec for

Embedded python fails to compile on Raspberry Pi

I installed python 3.9.1 on my Raspberry Pi following the instructions here https://www.ramoonus.nl/2020/10/06/how-to-install-python-3-9-on-raspberry-pi/ and set it as the default python interpreter. I got my compiling and linking parameters for embedded Python following the instructions here https://docs.python.org/3.9/extending/embedding.html#compiling-and-linking-under-unix-like-systems I tried a simple test with the following code (test.c) : and then gcc -I/usr/local/opt/python-3.9.1/include/python3.9 -I/usr/local/opt/python-3.9.1/include/python3.9 -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -c

As of today omnisharp doesn’t start properly (The “CheckForDuplicateFrameworkReferences” task could not be loaded from the assembly […])

The full error: The “CheckForDuplicateFrameworkReferences” task could not be loaded from the assembly /usr/lib64/dotnet/sdk/5.0.100/Sdks/Microsoft.NET.Sdk/targets/../tools/net472/Microsoft.NET.Build.Tasks.dll. Invalid Image Confirm that the declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask. It seems like the C# extension was updated 6 days ago, and I’m positive that I’ve been using

ncurses newterm following openpty

I am trying to figure out how to do the following: create a new pseudo-terminal open a ncurses screen running inside the (slave) pseudo terminal fork A) forward I/O from the terminal the program is running in (bash) to the new (slave) terminal OR B) exit leaving the ncurses program running in the new pty. Can anyone provide pointers to

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