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@@ -86,13 +86,36 @@ tokens.
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The example demonstrates comparing JSON pointers.
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```cpp
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--8<-- "examples/json_pointer__operator__equal.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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// different JSON pointers
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json::json_pointer ptr0;
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json::json_pointer ptr1("");
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json::json_pointer ptr2("/foo");
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// compare JSON pointers
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std::cout << std::boolalpha
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<< "\"" << ptr0 << "\" == \"" << ptr0 << "\": " << (ptr0 == ptr0) << '\n'
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<< "\"" << ptr0 << "\" == \"" << ptr1 << "\": " << (ptr0 == ptr1) << '\n'
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<< "\"" << ptr1 << "\" == \"" << ptr2 << "\": " << (ptr1 == ptr2) << '\n'
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<< "\"" << ptr2 << "\" == \"" << ptr2 << "\": " << (ptr2 == ptr2) << std::endl;
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}
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```
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Output:
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```
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--8<-- "examples/json_pointer__operator__equal.output"
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"" == "": true
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"" == "": true
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"" == "/foo": false
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"/foo" == "/foo": true
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```
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??? example "Example: (2) Comparing JSON pointers and strings"
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@@ -100,13 +123,50 @@ tokens.
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The example demonstrates comparing JSON pointers and strings, and when doing so may raise an exception.
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```cpp
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--8<-- "examples/json_pointer__operator__equal_stringtype.cpp"
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#include <exception>
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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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// different JSON pointers
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json::json_pointer ptr0;
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json::json_pointer ptr1("");
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json::json_pointer ptr2("/foo");
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// different strings
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std::string str0("");
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std::string str1("/foo");
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std::string str2("bar");
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// compare JSON pointers and strings
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std::cout << std::boolalpha
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<< "\"" << ptr0 << "\" == \"" << str0 << "\": " << (ptr0 == str0) << '\n'
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<< "\"" << str0 << "\" == \"" << ptr1 << "\": " << (str0 == ptr1) << '\n'
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<< "\"" << ptr2 << "\" == \"" << str1 << "\": " << (ptr2 == str1) << std::endl;
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try
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{
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std::cout << "\"" << str2 << "\" == \"" << ptr2 << "\": " << (str2 == ptr2) << std::endl;
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}
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catch (const json::parse_error& ex)
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{
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std::cout << ex.what() << std::endl;
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}
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}
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```
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Output:
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```
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--8<-- "examples/json_pointer__operator__equal_stringtype.output"
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"" == "": true
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"" == "": true
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"/foo" == "/foo": true
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"bar" == "/foo": [json.exception.parse_error.107] parse error at byte 1: JSON pointer must be empty or begin with '/' - was: 'bar'
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```
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## See also
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