Reference Language | Libraries | Comparison | Changes
reserve()
Description
The String reserve() function allows you to allocate a buffer in memory for manipulating strings.
Syntax
string.reserve(size)
Parameters
size: unsigned int declaring the number of bytes in memory to save for string manipulation
Returns
none
Example
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:
Serial.println(myString);
}
void loop() {
// nothing to do here
}
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:
Serial.println(myString);
}
void loop() {
// nothing to do here
}
Corrections, suggestions, and new documentation should be posted to the Forum.
The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.
Share
