junrushao1994 commented on a change in pull request #5806:
URL: https://github.com/apache/incubator-tvm/pull/5806#discussion_r440328106
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File path: include/tvm/runtime/container.h
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@@ -1410,10 +1344,114 @@ inline String& String::operator=(std::string other) {
inline String& String::operator=(const char* other) { return
operator=(std::string(other)); }
-inline String operator+(const std::string lhs, const String& rhs) {
- return lhs + rhs.operator std::string();
+template <typename T, typename U,
+ typename = typename std::enable_if<std::is_same<T, String>::value ||
+ std::is_same<T,
std::string>::value>::type,
+ typename = typename std::enable_if<std::is_same<U, String>::value ||
+ (std::is_same<U,
std::string>::value &&
+ !std::is_same<T,
U>::value)>::type>
+inline String operator+(const T& lhs, const U& rhs) {
+ size_t lhs_size = lhs.size();
+ size_t rhs_size = rhs.size();
+ char* concat = new char[lhs_size + rhs_size + 1];
+ std::memcpy(concat, lhs.data(), lhs_size);
+ std::memcpy(concat + lhs_size, rhs.data(), rhs_size);
+ auto ptr = make_object<StringObj>();
Review comment:
yes, you are right.
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