Q: How to print custom structs with pprint without overloading <<?

Use printer.print_inline with a tuple of member variables for quick output. For example, for a struct Point {int x,y;}, call printer.print_inline(std::make_tuple(p.x, p.y)); as shown in the user-defined types section.

Question 1

How do I print a nested vector of maps with pprint?

Accepted Answer

Use pprint::PrettyPrinter to print std::vector> directly, as shown in the README with compact mode for single-line output. Simply call printer.print(your_container) after including the header and configuring the printer.

Question 2

pprint vs fmt: which is better for C++ output?

Accepted Answer

pprint is focused on pretty printing containers for debugging, offering automatic formatting for STL types. fmt is a general-purpose formatting library with placeholders and wider type support. Choose pprint for container readability and fmt for flexible string formatting.

Question 3

Can pprint output to a file in C++?

Accepted Answer

Yes, construct a PrettyPrinter with an std::ofstream or any std::ostream-derived stream. For example, std::ofstream file("log.txt"); pprint::PrettyPrinter printer(file); printer.print(data); as outlined in the stream flexibility section.

Question 4

How to enable compact printing in pprint?

Accepted Answer

Call printer.compact(true) on your PrettyPrinter instance to print containers in a condensed, single-line format. This is useful for saving space, as demonstrated with the vector of maps example in the README.

Question 5

Does pprint support C++20's std::format or ranges?

Accepted Answer

pprint requires C++17 and doesn't explicitly support C++20 features like std::format or ranges. It focuses on STL containers available in C++17, so for newer features, you might need custom handling or alternative libraries.

Question 6

How to print custom structs with pprint without overloading <<?

Accepted Answer

Use printer.print_inline with a tuple of member variables for quick output. For example, for a struct Point {int x,y;}, call printer.print_inline(std::make_tuple(p.x, p.y)); as shown in the user-defined types section.

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