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doc: add note about value::at

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ToruNiina
2019-10-09 21:09:38 +09:00
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@@ -470,6 +470,10 @@ If an invalid key (integer for a table, string for an array), it throws
`toml::type_error` for the conversion. If the provided key is out-of-range, `toml::type_error` for the conversion. If the provided key is out-of-range,
it throws `std::out_of_range`. it throws `std::out_of_range`.
Note that, although `std::string` has `at()` member function, `toml::value::at`
throws if the contained type is a string. Because `std::string` does not
contain `toml::value`.
## Checking value type ## Checking value type
You can check the type of a value by `is_xxx` function. You can check the type of a value by `is_xxx` function.