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A StreamRange
<T>
is a range of StatusOr
<T>
where the end-of-stream is indicated by a non-OK Status
.
Callers can iterate the range using its begin()
and end()
members to access iterators that will work with any normal C++ constructs and algorithms that accept Input Iterators.
Callers should only consume/iterate this range.
Example: Iterating a range of 10 integers// Some function that returns a StreamRange<int>
StreamRange<int> MakeRangeFromOneTo(int n);
StreamRange<int> sr = MakeRangeFromOneTo(10);
for (StatusOr<int> const& x : sr) {
if (!x) {
std::cerr << "Fail: " << x.status() << "\n";
} else {
std::cout << *x << "\n";
}
}
Note: To construct a StreamRange
<T>
for testing (e.g. to mock a Connection::ListFoo
call), see google::cloud::mocks::MakeStreamRange
. Constructors StreamRange(StreamRange const &)
Move-only
Parameter Name Description
StreamRange const &
Move-only
Parameter Name Description
StreamRange &&
Default-constructs an empty range.
Operators operator=(StreamRange const &)Move-only
Parameter Name Description
StreamRange const &
StreamRange &
operator=(StreamRange &&)
Move-only
Parameter Name Description
StreamRange &&
StreamRange &
Functions begin() Returns Type Description iterator
end() Returns Type Description iterator
Type Aliases value_type
Alias Of: StatusOr< T >
Alias Of: IteratorImpl< value_type >
Alias Of: typename iterator::difference_type
Alias Of: typename iterator::reference
Alias Of: typename iterator::pointer
Alias Of: typename iterator::const_reference
Alias Of: typename iterator::const_pointer
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-14 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["The latest version available is 2.37.0-rc, with multiple older versions, starting at 2.36.0 and going back to 2.10.1, also being available for use."],["A `StreamRange\u003cT\u003e` is a range of `StatusOr\u003cT\u003e` where the end of the stream is indicated by a non-OK status, and users can iterate through it using `begin()` and `end()` to access iterators."],["The `StreamRange` is move-only, which is reflected in the descriptions of its constructors and assignment operators."],["`StreamRange` can be default constructed to be an empty range, and in order to test this one can use `google::cloud::mocks::MakeStreamRange` to mock it."],["The `StreamRange` type contains several type aliases such as `value_type`, `iterator`, and `difference_type`, that provide alternative names to pre existing types."]]],[]]
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