Output and input matrix

[pianonyy]

Hello! How can I input or output matrix in the JSON file?

[nlohmann]

In order to asses your issue, we need the following information:

• What is the issue you have?

• Please describe the steps to reproduce the issue. Can you provide a small but working code example?

• What is the expected behavior?

• And what is the actual behavior instead?

• Which compiler and operating system are you using? Is it a supported compiler?

• Did you use a released version of the library or the version from the develop branch?

• If you experience a compilation error: can you compile and run the unit tests?

[pianonyy]

I just want to do this one:(example on the photo)

But I only can do it with a lot of space, like this:
stdout:

my working code:

How can I change this situation?
my operating system: Ubuntu 18.04, g++ compiler
thank you for feedback!

[nlohmann]

This kind of pretty-printing is not possible. You can try j.dump() for a compact representation or j.dump(2) (or any other integer) for indented output.

[pianonyy]

thanks for your quick reply!