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Fix unused-result warnings in the contains and parse_error examples (#5788)

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contains(json_pointer) is marked JSON_HEDLEY_WARN_UNUSED_RESULT since #5477,
and parse() has been for longer. The contains example ignored the result in
two try blocks waiting for a parse_error that contains() never throws, so
they printed nothing; print the result for those pointers instead.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-10-08 16:21:59 +02:00
committed by GitHub
parent 3d7f554927
commit d8dfc0d0f9
3 changed files with 8 additions and 22 deletions
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docs/mkdocs/docs/examples/contains__json_pointer.cpp
+5 -21
View File
@@ -19,25 +19,9 @@ int main()
<< j.contains("/array/1"_json_pointer) << '\n'
<< j.contains("/array/-"_json_pointer) << '\n'
<< j.contains("/array/4"_json_pointer) << '\n'
<< j.contains("/baz"_json_pointer) << std::endl;
try
{
// try to use an array index with leading '0'
j.contains("/array/01"_json_pointer);
}
catch (const json::parse_error& e)
{
std::cout << e.what() << '\n';
}
try
{
// try to use an array index that is not a number
j.contains("/array/one"_json_pointer);
}
catch (const json::parse_error& e)
{
std::cout << e.what() << '\n';
}
<< j.contains("/baz"_json_pointer) << '\n'
// an array index with a leading '0' is not found
<< j.contains("/array/01"_json_pointer) << '\n'
// an array index that is not a number is not found
<< j.contains("/array/one"_json_pointer) << std::endl;
}