Description

Serializes the JsonArray to create a prettified JSON document.

If you want a compact JSON without space or line break, use JsonArray::printTo()

Signatures

size_t prettyPrintTo(char* buffer, size_t size) const;
size_t prettyPrintTo(char buffer[size]) const;
size_t prettyPrintTo(Print &) const;
size_t prettyPrintTo(String &) const;
size_t prettyPrintTo(std::string &) const;

Arguments

The destination where the JSON document should be written. It can be either:

  • a buffer with specified size (the size includes the zero-terminator),
  • an implementation of Print (like Serial, EthernetClient…),
  • a String or an std::string.

Return value

The number of bytes written.

Example

StaticJsonBuffer<200> jsonBuffer;
JsonArray& array = jsonBuffer.createArray();
array.add("hello");
array.add("world");
array.prettyPrintTo(Serial);

will write the following string to the serial output:

[
  "hello",
  "world"
]

See also