Added todos [skip ci]

Author: ankane

include/pgvector/halfvec.hpp

@@ -23,11 +23,13 @@ class HalfVector {
     HalfVector() = default;
 
     /// Creates a half vector from a `std::vector<float>`.
+    // TODO add explicit in 0.3.0
     HalfVector(const std::vector<float>& value) {
         value_ = value;
     }
 
     /// Creates a half vector from a `std::vector<float>`.
+    // TODO add explicit in 0.3.0
     HalfVector(std::vector<float>&& value) {
         value_ = std::move(value);
     }
@@ -39,6 +41,7 @@ class HalfVector {
 
 #if __cplusplus >= 202002L
     /// Creates a half vector from a span.
+    // TODO add explicit in 0.3.0
     HalfVector(std::span<const float> value) {
         value_ = std::vector<float>(value.begin(), value.end());
     }

include/pgvector/sparsevec.hpp

@@ -34,6 +34,7 @@ class SparseVector {
     }
 
     /// Creates a sparse vector from a dense vector.
+    // TODO add explicit in 0.3.0
     SparseVector(const std::vector<float>& value) {
         dimensions_ = value.size();
         for (size_t i = 0; i < value.size(); i++) {
@@ -47,6 +48,7 @@ class SparseVector {
 
 #if __cplusplus >= 202002L
     /// Creates a sparse vector from a span.
+    // TODO add explicit in 0.3.0
     SparseVector(std::span<const float> value) {
         dimensions_ = value.size();
         for (size_t i = 0; i < value.size(); i++) {

include/pgvector/vector.hpp

@@ -23,11 +23,13 @@ class Vector {
     Vector() = default;
 
     /// Creates a vector from a `std::vector<float>`.
+    // TODO add explicit in 0.3.0
     Vector(const std::vector<float>& value) {
         value_ = value;
     }
 
     /// Creates a vector from a `std::vector<float>`.
+    // TODO add explicit in 0.3.0
     Vector(std::vector<float>&& value) {
         value_ = std::move(value);
     }
@@ -39,6 +41,7 @@ class Vector {
 
 #if __cplusplus >= 202002L
     /// Creates a vector from a span.
+    // TODO add explicit in 0.3.0
     Vector(std::span<const float> value) {
         value_ = std::vector<float>(value.begin(), value.end());
     }