Search notes:

C++

Don't confuse c++ with the preprocessor whose executable name is cpp.
The GNU make manual encourages to use the .cc suffix for C++ files.
Preprocessor
C++ classes/structs
C++ keywords

Expressions

Examples for expressions:
An expression has two properties

C++23

This tweet suggests that the following code is valid C++23: 
import std;

int main() {
    auto v = std::vector{1, 2, 3};
    std::print("{}", v);
}
import is apparently a feature of C++20.

See also

If a compilation unit is compiled with a C++ compiler, the preprocessor will define the macro __cplusplus.
C / C++
ECMA-335 defines a C++/CLI language specification

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/developm...', 1746810044, '3.143.24.174', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/development/languages/C-C-plus-plus/CPP/index(83): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78