Question 1

How do I parse a TOML file in C++ using toml11?

Accepted Answer

Use `toml::parse("filename.toml")` to get a `toml::value`. For strings, use `toml::parse_str` or the `""_toml` literal. Error handling can be done with exceptions or `toml::try_parse` for exception-less parsing, as detailed in the README.

Question 2

toml11 or tomlplusplus: which is better for my project?

Accepted Answer

toml11 excels in full TOML spec compliance and detailed error messages, making it ideal for robust configuration management. Choose tomlplusplus if you prioritize different trade-offs like compilation speed or API design preferences.

Question 3

Does toml11 preserve comments when saving TOML files?

Accepted Answer

Yes, comments are stored within `toml::value` and retained during serialization with `toml::format`. You can access and modify comments via `value.comments()`, as shown in the example code.

Question 4

How to handle parsing errors without exceptions in toml11?

Accepted Answer

Use `toml::try_parse` which returns a `toml::result` type. Check for errors with `is_ok()` and `unwrap()` methods, allowing exception-free error handling, as documented in the features section.

Question 5

Can I use toml11 with custom C++ structs?

Accepted Answer

Yes, define conversion functions or use the `TOML11_DEFINE_CONVERSION_NON_INTRUSIVE` macro to map TOML tables to your structs. Examples in the README show this with user-defined types like `extlib::foo`.

Question 6

What C++ standards does toml11 support?

Accepted Answer

toml11 requires C++11 or later, with explicit support for C++14, C++17, and C++20. Precompilation options depend on the specified standard, as noted in the integration guide.

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