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Reference for Wiring version 0024+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Class | Vector
Name | ### clear()
Examples |
    Vector < int > intVector;

    void setup() {
      Serial.begin(9600);
      pinMode(48, OUTPUT);  // turn ON wiring hardware LED
      digitalWrite(48, HIGH);

      for(int i=0; i<255; i++) {  // add 255 elements from 0 to 254
        intVector.addElement(i);
      }

      Serial.print("The vector's capacity is: ");
      Serial.println(intVector.capacity(), DEC);  // print the vector's capacity

      if(intVector.contains(15) == true) {  // check if contains number 15
        Serial.println("The vector contains the element 15");
      }
      Serial.print("The vector's first element is: ");
      Serial.println(intVector.firstElement(), DEC);  // print the vector's first element
      Serial.print("The vector's index for element 30 is: ");
      Serial.println(intVector.indexOf(30), DEC);  // print the vector's element at position 30
      if(intVector.isEmpty() == false) {  // check if vector has elements
        Serial.println("The vector has elements");
      }
      Serial.print("The vector's last element is: ");
      Serial.println(intVector.lastElement(), DEC);  // print the vector's last element
      Serial.print("The vector's last index of 10 is: ");
      Serial.println(intVector.lastIndexOf(10), DEC);  // print the vector's last index of 10
      Serial.print("The vector's size is: ");
      Serial.println(intVector.size(), DEC);  // print the vector's size

      if(intVector.add(255) == true) {  // add element
        Serial.print("the element was added and now the vector's last element is: ");
        Serial.println(intVector.lastElement(), DEC);  // print the vector's last element
      }

      intVector.addElement(256); // add another element
      Serial.print("now the vector's last element is: ");
      Serial.println(intVector.lastElement(), DEC);  // print the vector's last element

      intVector.insertElementAt(0, 10);  // insert 0 at index 10

      int t = intVector.elementAt(10);  // get the element at index 10
      Serial.print("t is: ");
      Serial.println(t, DEC);  // print its value

      intVector.remove(10);  // remove element at position 10
      t = intVector.get(10);  // get the element at position 10
      Serial.print("t after remove is: ");
      Serial.println(t, DEC);  // print the element at position 10

      intVector.removeElementAt(10);  // remove element at position 10
      t = intVector.get(10);  // get the element at position 10
      Serial.print("t after removeElementAt is: ");  // print the element at position 10
      Serial.println(t, DEC);

      if(intVector.removeElement(23) ==true) {  // remove element 23 from the Vector
        Serial.print("the element 23 was removed and the element value after remove is: ");
      }

      intVector.setElementAt(10, 5);  // set element at postion 5 with value 10
      t = intVector.get(5);  // get the element at position 10
      Serial.print("element at index 5 is now: ");
      Serial.println(t, DEC);  // print the element at position 10

      intVector.clear();  // clear all elements in the vector
      Serial.print("The vector's size after clear is: ");
      Serial.println(intVector.size(), DEC);  // print the vector's size
    }

    void loop() {

    }
Description | Removes all of the elements from this vector.
Syntax |
    clear()
Usage | Application

Updated on November 01, 2009 05:24:16pm PST