String.startsWith()
Description
Teste si un objet String commence avec les caractères d'un autre objet String.
Syntaxe
string.startsWith(string2)
Valeurs Renvoyées
- true: si l'objet string commence par les caractères de l'objet string2
- false: dans le cas contraire
Exemple
void setup() {
Serial.begin(9600);
Serial.println("\n\nString startsWith() and endsWith():");
}
void loop() {
// startsWith() checks to see if a String starts with a particular substring:
String stringOne = "HTTP/1.1 200 OK";
Serial.println(stringOne);
if (stringOne.startsWith("HTTP/1.1")) {
Serial.println("Server's using http version 1.1");
}
// you can also look for startsWith() at an offset position in the string:
stringOne = "HTTP/1.1 200 OK";
if (stringOne.startsWith("200 OK", 9)) {
Serial.println("Got an OK from the server");
}
// endsWith() checks to see if a String ends with a particular character:
String sensorReading = "sensor = ";
sensorReading += analogRead(A0);
Serial.print (sensorReading);
if (sensorReading.endsWith(0)) {
Serial.println(". This reading is divisible by ten");
}
else {
Serial.println(". This reading is not divisible by ten");
}
// do nothing while true:
while (true);
}
Voir Également
- Langage: Arduino - String
- Langage: String.charAt()
- Langage: String.compareTo()
- Langage: String.concat()
- Langage: String.endsWith()
- Langage: String.equals()
- Langage: String.equalsIgnoreCase()
- Langage: String.getBytes()
- Langage: String.indexOf()
- Langage: String.lastIndexOf()
- Langage: String.length()
- Langage: String.replace()
- Langage: String.setCharAt()
- Langage: String.substring()
- Langage: String.toCharArray()
- Langage: String.toLowerCase()
- Langage: String.toUpperCase()
- Langage: String.trim()
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