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Niels Lohmann
0660e6d482
From gregmarr's review of #5622: - begin()/end(): "a null value or a discarded view iterates as an empty range", singular like the primitive case before it. - The class page's list of function groups has no trailing commas. - document_data::key_equals() compares a key node with a string, for the key comparisons that were spelled out in each lookup. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
1.5 KiB
1.5 KiB
nlohmann::basic_json_view::end
iterator end() const noexcept;
Returns an iterator to one past the last element of an array, one past the last member value of an object, in
document order -- see begin(). A primitive value iterates as a range of one element (itself), and a
#!json null value or a discarded view iterates as an empty range (#!cpp begin() == end()).
Return value
Iterator one past the last element.
Exception safety
No-throw guarantee: this function never throws exceptions.
Complexity
Constant.
Notes
#!cpp iterator is a forward iterator: unlike BasicJsonType::iterator, it cannot be decremented, so there is no
way to reach the last element by stepping back from end(). Use back() instead.
Examples
??? example
The example below scans a (possibly large) array of readings for the first one over a threshold, stopping the
loop at `end()` as soon as one is found. Only the matching reading, if any, is ever materialized.
```cpp
--8<-- "examples/basic_json_view__end.cpp"
```
Output:
```json
--8<-- "examples/basic_json_view__end.output"
```
See also
- begin - returns an iterator to the first element
- cend - returns a const iterator to one past the last element
BasicJsonType::end- the corresponding function ofbasic_json
Version history
- Added in version 3.13.0.