diff options
Diffstat (limited to 'source/blender/blenlib/BLI_vector.hh')
| -rw-r--r-- | source/blender/blenlib/BLI_vector.hh | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/source/blender/blenlib/BLI_vector.hh b/source/blender/blenlib/BLI_vector.hh index d08a5c65c52..3ffd5309a04 100644 --- a/source/blender/blenlib/BLI_vector.hh +++ b/source/blender/blenlib/BLI_vector.hh @@ -444,7 +444,7 @@ class Vector { this->append_as(std::move(value)); } /* This is similar to `std::vector::emplace_back`. */ - template<typename... ForwardValue> void append_as(ForwardValue &&... value) + template<typename... ForwardValue> void append_as(ForwardValue &&...value) { this->ensure_space_for_one(); this->append_unchecked_as(std::forward<ForwardValue>(value)...); @@ -486,7 +486,7 @@ class Vector { { this->append_unchecked_as(std::move(value)); } - template<typename... ForwardT> void append_unchecked_as(ForwardT &&... value) + template<typename... ForwardT> void append_unchecked_as(ForwardT &&...value) { BLI_assert(end_ < capacity_end_); new (end_) T(std::forward<ForwardT>(value)...); @@ -669,6 +669,21 @@ class Vector { } /** + * Return a reference to the first element in the vector. + * This invokes undefined behavior when the vector is empty. + */ + const T &first() const + { + BLI_assert(this->size() > 0); + return *begin_; + } + T &first() + { + BLI_assert(this->size() > 0); + return *begin_; + } + + /** * Return how many values are currently stored in the vector. */ int64_t size() const |