String class

reserve()

The String reserve() function allows you to allocate a buffer in memory for manipulating strings.

// SYNTAX
string.reserve(size)

// PROTOTYPE
unsigned char reserve(unsigned int size);

Parameters:

• size: unsigned int declaring the number of bytes in memory to save for string manipulation

Returns: None

//EXAMPLE
SerialLogHandler logHandler;

String myString;

void setup() {
  // initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  myString.reserve(26);
  myString = "i=";
  myString += "1234";
  myString += ", is that ok?";

  // print the String:
  Log.info(myString);
}

void loop() {
 // nothing to do here
}