diff options
| author | Marc Mutz <marc.mutz@qt.io> | 2024-02-14 09:52:22 +0100 |
|---|---|---|
| committer | Marc Mutz <marc.mutz@qt.io> | 2024-02-15 17:44:36 +0000 |
| commit | af051f9be230f06eba587c25d56837fb48fcc9ee (patch) | |
| tree | d36b547eec6c83b4dd43895c8cf56f440715f483 /tests/auto/corelib/tools | |
| parent | e703feea40108cdd11f8f0270cc82c2aa0e691cd (diff) | |
QVarLengthArray: re-publish Prealloc as a nested PreallocatedSize
This gives users of the class easy access to the Prealloc template
argument, without having to write a pattern-matcher like
template <typename T>
constexpr qsizetype preallocated_size_v;
template <typename T, qsizetype N>
constexpr qsizetype preallocated_size_v<QVarLengthArray<T,N>> = N;
first.
[ChangeLog][QtCore][QVarLengthArray] Added PreallocatedSize nested
constant, equal to the Prealloc template argument.
Change-Id: I928eaa5e62967445cdd7b0c2759567483fdb8997
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Diffstat (limited to 'tests/auto/corelib/tools')
| -rw-r--r-- | tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp b/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp index dcee8fd705..6a92663bc4 100644 --- a/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp +++ b/tests/auto/corelib/tools/qvarlengtharray/tst_qvarlengtharray.cpp @@ -66,6 +66,7 @@ private slots: void sizeConstructor_QString() { sizeConstructor<QString>(); } void sizeConstructor_NonCopyable() { sizeConstructor<NonCopyable>(); } void append(); + void preallocatedSize(); #if QT_DEPRECATED_SINCE(6, 3) void prepend(); #endif @@ -194,6 +195,15 @@ void tst_QVarLengthArray::append() v2.append(5); } +void tst_QVarLengthArray::preallocatedSize() +{ + // The default is 256: + static_assert(QVarLengthArray<int>::PreallocatedSize == 256); + // Otherwise, whatever was given as template argument: + static_assert(QVarLengthArray<int, 42>::PreallocatedSize == 42); + static_assert(QVarLengthArray<int, 1'000'000>::PreallocatedSize == 1'000'000); +} + #if QT_DEPRECATED_SINCE(6, 3) QT_WARNING_PUSH QT_WARNING_DISABLE_DEPRECATED |