Json: How to erase nested objects inside other objects?

[sqwunkly]

Hello Niels,

Is it possible to erase/delete nested objects using a similar technique as you've created for adding nested objects inside other objects?

​​j["answer"]["everything"] = 42;

Is there an equivalent way to do j.erase(​["answer"]["everything"]; (ie, doesn't work) ?

This ​j​​["answer"]["everything"] = 42; is neat for adding nested objects inside other objects but so far I'm unable to find a corresponding function in your library to delete/erase nested objects. Is there a way to do this?

My apologies if I've missed something obvious. Hoping you can help me with these two questions. Much thanks. Greg

[gregmarr]

Have you tried j["answer"].erase("everything");?

[nlohmann]

See also:

• https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a068a16e76be178e83da6a192916923ed.html#a068a16e76be178e83da6a192916923ed
• https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a4b3f7eb2d4625d95a51fbbdceb7c5f39.html#a4b3f7eb2d4625d95a51fbbdceb7c5f39
• https://nlohmann.github.io/json/classnlohmann_1_1basic__json_a2f8484d69c55d8f2a9697a7bec29362a.html#a2f8484d69c55d8f2a9697a7bec29362a

[sqwunkly]

Hi gregmarr, no I hadn't tried that. It is the solution I was looking for. Excellent. Nice. Thank you!