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📝 overworked documentation for the at functions

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Added all possible exceptions to the examples of the at functions.
This commit is contained in:
Niels Lohmann
2017-03-12 13:49:39 +01:00
parent 89f6068385
commit 28dbe4e651
21 changed files with 296 additions and 93 deletions
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40
doc/examples/at_json_pointer_const.cpp
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@ -5,7 +5,7 @@ using json = nlohmann::json;
int main()
{
// create a JSON value
json j =
const json j =
{
{"number", 1}, {"string", "foo"}, {"array", {1, 2}}
};
@ -21,10 +21,44 @@ int main()
// output element with JSON pointer "/array/1"
std::cout << j.at("/array/1"_json_pointer) << '\n';
// try to use an invalid JSON pointer
// out_of_range.109
try
{
auto ref = j.at("/number/foo"_json_pointer);
// try to use an array index that is not a number
json::const_reference ref = j.at("/array/one"_json_pointer);
}
catch (json::parse_error& e)
{
std::cout << e.what() << '\n';
}
// out_of_range.401
try
{
// try to use a an invalid array index
json::const_reference ref = j.at("/array/4"_json_pointer);
}
catch (json::out_of_range& e)
{
std::cout << e.what() << '\n';
}
// out_of_range.402
try
{
// try to use the array index '-'
json::const_reference ref = j.at("/array/-"_json_pointer);
}
catch (json::out_of_range& e)
{
std::cout << e.what() << '\n';
}
// out_of_range.404
try
{
// try to use a JSON pointer that cannot be resolved
json::const_reference ref = j.at("/number/foo"_json_pointer);
}
catch (json::out_of_range& e)
{