return 1;
}
+template <size_t N>
+constexpr size_t estimateSpaceNeeded(const char (&)[N]) {
+ return N;
+}
+
/**
* Everything implicitly convertible to const char* gets appended.
*/
return 0;
}
+template <class Src>
+typename std::enable_if<IsSomeString<Src>::value, size_t>::type
+estimateSpaceNeeded(Src const& value) {
+ return value.size();
+}
+
template <class Src>
typename std::enable_if<
- (std::is_convertible<Src, folly::StringPiece>::value ||
- IsSomeString<Src>::value) &&
- !std::is_convertible<Src, const char*>::value,
- size_t>::type
+ std::is_convertible<Src, folly::StringPiece>::value &&
+ !IsSomeString<Src>::value &&
+ !std::is_convertible<Src, const char*>::value,
+ size_t>::type
estimateSpaceNeeded(Src value) {
return folly::StringPiece(value).size();
}
namespace detail {
constexpr int kConvMaxDecimalInShortestLow = -6;
constexpr int kConvMaxDecimalInShortestHigh = 21;
-} // folly::detail
+} // namespace detail
/** Wrapper around DoubleToStringConverter **/
template <class Tgt, class Src>
toAppend(delim, detail::getLastElement(vs...));
toAppendDelimStrImpl(delim, vs...);
}
-} // folly::detail
-
+} // namespace detail
/**
* Variadic conversion to string. Appends each element in turn.
});
}
+template <class Tgt, class Src>
+inline typename std::enable_if<
+ IsSomeString<Src>::value && !std::is_same<StringPiece, Tgt>::value,
+ Tgt>::type
+to(Src const& src) {
+ return to<Tgt>(StringPiece(src.data(), src.size()));
+}
+
template <class Tgt>
inline
typename std::enable_if<!std::is_same<StringPiece, Tgt>::value, Tgt>::type
template <class Tgt, class Src>
typename std::enable_if<
- std::is_enum<Tgt>::value && !std::is_same<Src, Tgt>::value, Tgt>::type
-to(const Src & value) {
+ !IsSomeString<Src>::value && std::is_enum<Tgt>::value &&
+ !std::is_same<Src, Tgt>::value,
+ Tgt>::type
+to(const Src& value) {
return static_cast<Tgt>(to<typename std::underlying_type<Tgt>::type>(value));
}