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# Glaze
**Extremely fast, in memory, JSON and reflection library for modern C++**
One of the fastest JSON libraries in the world. Glaze reads and writes from object memory, simplifying interfaces and offering incredible performance.
## Feature Shortlist
- **Pure, compile time reflection** for structs
- **JSON RFC 8259 compliance** with UTF-8 validation
- **Standard C++ library support**
- **Header only**
- **Direct to memory serialization/deserialization**
- **Compile time maps** with constant time lookups and perfect hashing
- **No exceptions** (compiles with `-fno-exceptions`)
- **No runtime type information** necessary (compiles with `-fno-rtti`)
- **MessagePack serialization** with binary ext + partial read/write support
## Quick Example
```cpp
struct my_struct {
int i = 287;
double d = 3.14;
std::string hello = "Hello World";
std::array<uint64_t, 3> arr = {1, 2, 3};
};
// Write JSON
my_struct s{};
std::string buffer = glz::write_json(s).value_or("error");
// Read JSON
auto s2 = glz::read_json<my_struct>(buffer);
```
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