Difference between revisions of "cpp/container/span/size bytes"
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Andreas Krug (Talk | contribs) m (fmt, and -> &&) |
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#include <cstdint> | #include <cstdint> | ||
#include <span> | #include <span> | ||
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int main() | int main() | ||
{ | { | ||
| + | constexpr static std::int32_t a[]{1, 2, 3, 4, 5}; | ||
| + | constexpr static std::span s{a}; | ||
| + | |||
static_assert | static_assert | ||
( | ( | ||
Latest revision as of 07:32, 5 November 2023
| constexpr size_type size_bytes() const noexcept; |
(since C++20) | |
Returns the size of the sequence in bytes.
Contents |
[edit] Parameters
(none)
[edit] Return value
The size of the sequence in bytes, i.e., size() * sizeof(element_type).
[edit] Example
Run this code
#include <cstdint> #include <span> int main() { constexpr static std::int32_t a[]{1, 2, 3, 4, 5}; constexpr static std::span s{a}; static_assert ( sizeof(int32_t) == 4 && std::size(a) == 5 && sizeof a == 20 && s.size() == 5 && s.size_bytes() == 20 ); }
[edit] See also
| (C++20) |
returns the number of elements in the sequence (public member function) |
