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  1. Visual Studio: NU1008 Central Package Management problem

    Mar 21, 2025 · The build system thinks that your solution has Central Package Management (CPM) enabled while your package references are not configured to support said setup. If you …

  2. Is it possible to use a if statement inside #define?

    There are multiple problems with your macro: it expands to a statement, so you cannot use it as an expression the arguments are not properly parenthesized in the expansion: invoking this …

  3. Why are #ifndef and #define used in C++ header files?

    I have been seeing code like this usually in the start of header files: #ifndef HEADERFILE_H #define HEADERFILE_H And at the end of the file is #endif What is the purpose of this?

  4. c++ - Why use #define instead of a variable - Stack Overflow

    May 14, 2011 · What is the point of #define in C++? I've only seen examples where it's used in place of a "magic number" but I don't see the point in just giving that value to a variable instead.

  5. How do I show the value of a #define at compile-time?

    I know that this is a long time after the original query, but this may still be useful. This can be done in GCC using the stringify operator "#", but it requires two additional stages to be defined first. …

  6. How do I use extern to share variables between source files?

    Best way to declare and define global variables The clean, reliable way to declare and define global variables is to use a header file to contain an extern declaration of the variable. The …

  7. What is the purpose of the #define directive in C++?

    May 10, 2010 · 0 in C or C++ #define allows you to create preprocessor Macros. In the normal C or C++ build process the first thing that happens is that the PreProcessor runs, the …

  8. Creating an empty Pandas DataFrame, and then filling it

    NEVER grow a DataFrame row-wise! TLDR: (just read the bold text) Most answers here will tell you how to create an empty DataFrame and fill it out, but no one will tell you that it is a bad …

  9. How do I define a function with optional arguments?

    How do I define a function with optional arguments? Asked 13 years, 5 months ago Modified 1 year, 1 month ago Viewed 1.2m times

  10. Is there a way to do a #define inside of another #define?

    I know that I am trying to shoot myself in the leg ;) However, it will allow me to make the rest (big amount) of code smaller and more readable. Is there any tricky way to create preprocessor …

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