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@@ -118,13 +118,32 @@ Strong exception safety: if an exception occurs, the original value stays intact
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The example shows how `insert()` is used.
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```cpp
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--8<-- "examples/insert.cpp"
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#include <iostream>
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#include <nlohmann/json.hpp>
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using json = nlohmann::json;
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int main()
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{
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// create a JSON array
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json v = {1, 2, 3, 4};
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// insert number 10 before number 3
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auto new_pos = v.insert(v.begin() + 2, 10);
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// output new array and result of insert call
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std::cout << *new_pos << '\n';
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std::cout << v << '\n';
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}
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```
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Output:
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```json
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--8<-- "examples/insert.output"
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10
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[1,2,10,3,4]
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```
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??? example "Example: (2) insert copies of element into array"
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@@ -132,13 +151,32 @@ Strong exception safety: if an exception occurs, the original value stays intact
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The example shows how `insert()` is used.
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```cpp
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--8<-- "examples/insert__count.cpp"
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#include <iostream>
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#include <nlohmann/json.hpp>
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using json = nlohmann::json;
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int main()
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{
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// create a JSON array
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json v = {1, 2, 3, 4};
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// insert number 7 copies of number 7 before number 3
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auto new_pos = v.insert(v.begin() + 2, 7, 7);
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// output new array and result of insert call
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std::cout << *new_pos << '\n';
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std::cout << v << '\n';
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}
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```
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Output:
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```json
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--8<-- "examples/insert__count.output"
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7
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[1,2,7,7,7,7,7,7,7,3,4]
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```
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??? example "Example: (3) insert a range of elements into an array"
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@@ -146,13 +184,35 @@ Strong exception safety: if an exception occurs, the original value stays intact
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The example shows how `insert()` is used.
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```cpp
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--8<-- "examples/insert__range.cpp"
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#include <iostream>
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#include <nlohmann/json.hpp>
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using json = nlohmann::json;
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int main()
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{
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// create a JSON array
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json v = {1, 2, 3, 4};
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// create a JSON array to copy values from
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json v2 = {"one", "two", "three", "four"};
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// insert range from v2 before the end of array v
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auto new_pos = v.insert(v.end(), v2.begin(), v2.end());
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// output new array and result of insert call
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std::cout << *new_pos << '\n';
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std::cout << v << '\n';
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}
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```
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Output:
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```json
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--8<-- "examples/insert__range.output"
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"one"
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[1,2,3,4,"one","two","three","four"]
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```
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??? example "Example: (4) insert elements from an initializer list into an array"
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@@ -160,13 +220,32 @@ Strong exception safety: if an exception occurs, the original value stays intact
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The example shows how `insert()` is used.
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```cpp
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--8<-- "examples/insert__ilist.cpp"
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#include <iostream>
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#include <nlohmann/json.hpp>
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using json = nlohmann::json;
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int main()
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{
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// create a JSON array
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json v = {1, 2, 3, 4};
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// insert range from v2 before the end of array v
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auto new_pos = v.insert(v.end(), {7, 8, 9});
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// output new array and result of insert call
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std::cout << *new_pos << '\n';
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std::cout << v << '\n';
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}
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```
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Output:
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```json
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--8<-- "examples/insert__ilist.output"
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7
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[1,2,3,4,7,8,9]
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```
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??? example "Example: (5) insert a range of elements into an object"
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@@ -174,13 +253,37 @@ Strong exception safety: if an exception occurs, the original value stays intact
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The example shows how `insert()` is used.
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```cpp
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--8<-- "examples/insert__range_object.cpp"
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#include <iostream>
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#include <nlohmann/json.hpp>
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using json = nlohmann::json;
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int main()
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{
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// create two JSON objects
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json j1 = {{"one", "eins"}, {"two", "zwei"}};
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json j2 = {{"eleven", "elf"}, {"seventeen", "siebzehn"}};
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// output objects
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std::cout << j1 << '\n';
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std::cout << j2 << '\n';
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// insert range from j2 to j1
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j1.insert(j2.begin(), j2.end());
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// output result of insert call
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std::cout << j1 << '\n';
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}
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```
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Output:
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```json
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--8<-- "examples/insert__range_object.output"
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{"one":"eins","two":"zwei"}
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{"eleven":"elf","seventeen":"siebzehn"}
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{"eleven":"elf","one":"eins","seventeen":"siebzehn","two":"zwei"}
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```
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## See also
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