String.reserve()

설명

스트링 reserve() 함수는 스트링을 다루기 위해 메모리 안에 버퍼를 할당하는 것을 허용한다.

문법

myString.reserve(size)

매개변수

  • size: unsigned int 문자열을 다루기 위해 메모리 안에 저장되는 바이트 수 선언

반환값

  • 없음

예제 코드

String myString; void setup() { Serial.begin(9600); myString.reserve(26); myString = "Arduino"; myString += "GetStarted"; myString += ".com"; // print the String: Serial.println(myString); } void loop() { }

시리얼 모니터에 결과:

COM6
Send
ArduinoGetStarted.com
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

※ 주의 및 경고:

If the string is modified, it is highly recommended using String.reserve() to prevent the memory fragmentation issue

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