Use this tag for questions related to nlohmann JSON C++ library
nlohmann JSON is a header-only JSON class for Modern C++ (C++11)
Latest release: 3.9.1 released on 2020-08-06
See the github project
Questions tagged [nlohmann-json]
248 questions
-1
votes
1 answer
nlohmann json insert an array into another array
I want to take these two arrays:
[1, 2, 5]
[3, 4]
and insert the [3, 4] into position 2 of [1, 2, 5].
The result would look like this:
[1, 2, 3, 4, 5]
How can I achieve this?
Ank i zle
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votes
1 answer
C++ json insert into array
I am using nlohmann json. I want to insert into an array. I know in javascript there is a Array.prototype.splice that allows you to insert into an array. Is there a similar way in nlohmann's json.
I want this to happen:
//from this:
[1, 2, 3,…
Ank i zle
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- 36
-1
votes
1 answer
How to delete nested json data using nlohmann c++
I have a below json data. I am using nlohmann json in C++.
{
"CompanyName": "XYZ Tech",
"Created": "2019-10-16T20:14:29Z",
"TxnId": "4509237",
"Tags": [
{
"ROIId": "Default",
"Time": 71,
…
S Andrew
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votes
1 answer
Getting null values while saving json data in file using nlohmann json
I am using nlohmann json to create ans save some json values. But when I look at the file, I get null values in between the json. Below is how it looks like:
{
"Created": "2019-07-03T13:54:32Z",
"DataId": "BHI-201-U8",
"Data": [
…
S Andrew
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-1
votes
1 answer
C++ no matching function for call when using push_back in older json::nlohmann library
#include "json.hpp"
#include
#include
#include
struct json_node;
using json_node_ptr = std::shared_ptr;
struct json_node
{
int id;
std::vector children;
json_node(int _id)
…
cateof
- 6,608
- 25
- 79
- 153
-1
votes
1 answer
Create JSON structure based on input variables
I have the following JSON file:
{
"outer_size":2,
"inner_size":{
"length_one":2,
"length_two":1
}
}
I will use this info to create a new JSON file, whose dimensions are determined by outer_size, inner_size, length_one and…
BillyJean
- 1,537
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- 39
-2
votes
1 answer
Format JSON in C++
I'm trying to parse JSON in C++ with nlohmann/json library. But this library can't parse not formatted JSON.
I get an error:
libc++abi.dylib: terminating with uncaught exception of type nlohmann::detail::parse_error: [json.exception.parse_error.101]…
Natoly
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- 3
-2
votes
2 answers
How to append in json file at specific position
I'm trying to append JSON objects to a file at specific position but I'm unable to do it as required. I get result but without "," separating the values, so they are separate JSON objects.
I want to loop through JSON objects and append the result to…
Amy
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