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Switch to copy-and-swap idiom for operator=.

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This allows the compiler to elide a copy when rhs is a temporary.
This commit is contained in:
Billy Donahue
2014-09-08 08:00:39 -04:00
committed by Christopher Dunn
parent 236db83742
commit 45cd9490cd
4 changed files with 12 additions and 16 deletions
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8
include/json/value.h
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@@ -171,7 +171,7 @@ private:
CZString(const char *cstr, DuplicationPolicy allocate);
CZString(const CZString &other);
~CZString();
CZString &operator=(const CZString &other);
CZString &operator=(CZString other);
bool operator<(const CZString &other) const;
bool operator==(const CZString &other) const;
ArrayIndex index() const;
@@ -238,7 +238,7 @@ Json::Value obj_value(Json::objectValue); // {}
Value(const Value &other);
~Value();
Value &operator=(const Value &other);
Value &operator=(Value other);
/// Swap values.
/// \note Currently, comments are intentionally not swapped, for
/// both logic and efficiency.
@@ -681,7 +681,7 @@ public:
ValueInternalMap();
ValueInternalMap(const ValueInternalMap &other);
ValueInternalMap &operator=(const ValueInternalMap &other);
ValueInternalMap &operator=(ValueInternalMap other);
~ValueInternalMap();
void swap(ValueInternalMap &other);
@@ -775,7 +775,7 @@ public:
ValueInternalArray();
ValueInternalArray(const ValueInternalArray &other);
ValueInternalArray &operator=(const ValueInternalArray &other);
ValueInternalArray &operator=(ValueInternalArray other);
~ValueInternalArray();
void swap(ValueInternalArray &other);