Description

JsonString is an object that refers to a constant string in RAM. You can see it a a supercharged const char* that supports:

  • comparison operations
  • non-zero-terminated strings
  • NUL characters inside the string

It is similar to std::string_view.

Interface

class JsonString { public: JsonString(const char* p=0, bool isStatic=false); JsonString(const char* p, size_t n, bool isStatic=false); size_t size() const; const char* c_str() const; bool isStatic() const; }; 

ArduinoJson 7.3: the isStatic flag indicates that the string is safe to store by address.

See also

Global warming stripes by Professor Ed Hawkins (University of Reading)