amorfo77/json
1
0
Fork 0
mirror of https://github.com/nlohmann/json.git synced 2026-04-22 15:59:26 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add recursive update function (#3069)

Browse Source 
* ✨ add recursive update function
This commit is contained in:
Niels Lohmann
2021-11-03 13:52:20 +01:00
committed by GitHub
parent 7440786b81
commit 5d87c4d409
9 changed files with 243 additions and 128 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
doc/examples/update.cpp
View File

@@ -7,12 +7,17 @@ using json = nlohmann::json;
int main()
{
// create two JSON objects
json o1 = R"( {"color": "red", "price": 17.99} )"_json;
json o2 = R"( {"color": "blue", "speed": 100} )"_json;
json o1 = R"( {"color": "red", "price": 17.99, "names": {"de": "Flugzeug"}} )"_json;
json o2 = R"( {"color": "blue", "speed": 100, "names": {"en": "plane"}} )"_json;
json o3 = o1;
// add all keys from o2 to o1 (updating "color")
// add all keys from o2 to o1 (updating "color", replacing "names")
o1.update(o2);
// output updated object o1
// add all keys from o2 to o1 (updating "color", merging "names")
o3.update(o2, true);
// output updated object o1 and o3
std::cout << std::setw(2) << o1 << '\n';
std::cout << std::setw(2) << o3 << '\n';
}

12
doc/examples/update.output
View File

@@ -1,5 +1,17 @@
{
"color": "blue",
"names": {
"en": "plane"
},
"price": 17.99,
"speed": 100
}
{
"color": "blue",
"names": {
"de": "Flugzeug",
"en": "plane"
},
"price": 17.99,
"speed": 100
}

13
doc/examples/update__range.cpp
View File

@@ -7,12 +7,17 @@ using json = nlohmann::json;
int main()
{
// create two JSON objects
json o1 = R"( {"color": "red", "price": 17.99} )"_json;
json o2 = R"( {"color": "blue", "speed": 100} )"_json;
json o1 = R"( {"color": "red", "price": 17.99, "names": {"de": "Flugzeug"}} )"_json;
json o2 = R"( {"color": "blue", "speed": 100, "names": {"en": "plane"}} )"_json;
json o3 = o1;
// add all keys from o2 to o1 (updating "color")
// add all keys from o2 to o1 (updating "color", replacing "names")
o1.update(o2.begin(), o2.end());
// output updated object o1
// add all keys from o2 to o1 (updating "color", merging "names")
o3.update(o2.begin(), o2.end(), true);
// output updated object o1 and o3
std::cout << std::setw(2) << o1 << '\n';
std::cout << std::setw(2) << o3 << '\n';
}

12
doc/examples/update__range.output
View File

@@ -1,5 +1,17 @@
{
"color": "blue",
"names": {
"en": "plane"
},
"price": 17.99,
"speed": 100
}
{
"color": "blue",
"names": {
"de": "Flugzeug",
"en": "plane"
},
"price": 17.99,
"speed": 100
}