1 files changed, 12 insertions, 1 deletions
diff --git a/vector/vector.cpp b/vector/vector.cpp
index f422db2..0322ee2 100644
--- a/vector/vector.cpp
+++ b/vector/vector.cpp
@@ -36,7 +36,7 @@ basic_vec<T, d>::basic_vec(const basic_vec<T, n>& other) {
     static_assert(d >= n);
     this->fill(static_cast<T>(0));
     for (std::size_t i = 0;  i < n; i++) {
-        this[i] = other[i];
+        this->at(i) = other.at(i);
     }
 }
 
@@ -103,12 +103,19 @@ template<typename T, std::size_t d>
 class vec: public basic_vec<T, d> {
 public:
     vec(std::initializer_list<T> l) : basic_vec<T, d>(l) {}
+
+    template<std::size_t n>
+    vec(const basic_vec<T, n>& other) : basic_vec<T, d>(other) {}
 };
 
 template<typename T>
 class vec3 : public basic_vec<T, 3> {
 public:
     vec3(std::initializer_list<T> l) : basic_vec<T, 3>(l) {}
+
+    template<std::size_t n>
+    vec3(const basic_vec<T, n>& other) : basic_vec<T, 3>(other) {}
+
     static vec3<T> cross(const vec3<T>& rhs, const vec3<T>& lhs);
 };
 
@@ -125,6 +132,10 @@ template<typename T>
 class vec2: public basic_vec<T, 2> {
 public:
     vec2(std::initializer_list<T> l) : basic_vec<T, 2>(l) {}
+
+    template<std::size_t n>
+    vec2(const basic_vec<T, n>& other) : basic_vec<T, 2>(other) {}
+
     T angle();
     static vec3<T> cross(const vec2<T>& rhs, const vec2<T>& lhs);
 };