Vector::ensureCapacity() \ Language (API) \ Wiring ALPHA 1.0
Author: Hernando Barragán
Description: Wiring is an electronic sketchbook and hardware electronics for developing ideas. It is a context for learning fundamentals of computer programming and prototyping with electronics within the context of the electronic arts.
Keywords: Wiring, Processing, Interactive Media, Electronic Arts, Programming, C, C++, Hernando Barragán

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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 | ### ensureCapacity()
Examples |
    Vector < int > intVector;
    int arrayOfInts[11];  // declares an array of ints with 11 positions

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

      for(int i=0; i<10; i++) {  // add 255 elements from 0 to 254
        intVector.addElement(i);
      }

      intVector.copyInto(arrayOfInts);  // copy the Vector content into an array

      Serial.print("The arrayOfInts elements are: ");
      for(int i=0; i<10; i++) {  // print all all elements in the array
        Serial.print(arrayOfInts[i], DEC);
        Serial.print(" ");
      }
      Serial.println();

      Serial.print("The vector's capacity is: ");
      Serial.println(intVector.capacity(), DEC);  // print the vector's capacity
      intVector.ensureCapacity(20);
      Serial.print("now the vector's capacity is: ");
      Serial.println(intVector.capacity(), DEC);  // print the vector's capacity

      Serial.print("The vector's size is: ");
      Serial.println(intVector.size(), DEC);  // print the vector's size
      intVector.setSize(5);
      Serial.print("now the vector's size is: ");
      Serial.println(intVector.size(), DEC);  // print the vector's size

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

    void loop() {

    }
Description | Increases the capacity of this vector, if necessary, to ensure that it can hold at least the number of components specified by the minimum capacity argument. If the current capacity of this vector is less than minCapacity, then its capacity is increased by replacing its internal data array with a larger one. The size of the new data array will be the old size plus the capacity increment, unless the value of capacity increment is less than or equal to zero, in which case the new capacity will be twice the old capacity; but if this new size is still smaller than minCapacity, then the new capacity will be minCapacity.
Syntax |
    ensureCapacity(minCapacity)
Parameters |
minCapacity | minCapacity: int, the vector's minimum capacity
Usage | Application

Updated on November 01, 2009 05:23:51pm PST