2.2.3.18 vector

Name

vector

Remark

An Origin C vector is a dynamically allocated and sized array that is not tied to an internal Origin data set allowing a greater degree of flexibility.

vector is a template class with a default type of double but a vector of any basic data type (including char, byte, short, word, int, uint, complex, string) can be constructed using the syntax vector<type>. The vector class is derived from the vectorbase class from which it inherits methods and properties.

Hierarchy

• vectorbase
  • vector
    • Dataset

Examples

EX1

// Example for numeric type vector
void vector_ex1()
{
    int imax = 10;
    vector<double> vX(imax);      // vector of doubles having imax elements
    vector vY(imax);              // vector of doubles by default
    vector<int> vI;               // vector of ints

    for(int ii = 0; ii < vX.GetSize(); ii++)
        vX[ii] = rnd();

    vY = 10 * vX;                 // vector arithmetic is supported
    vI = vY;                      // Cast double vector into int vector

    for(ii = 0; ii < vI.GetSize(); ii++) // Output cast elements of vectors
        printf("vI[%d]=%d after cast from %f\n",ii,vI[ii],vY[ii]);
}

EX2

// StringArray Example
// StringArray is typedef vector<string> in string.h
void vector_ex2()
{
    // declare one StringArray variable named saList and assign values 
    StringArray saList = { "Hello", "World", "!"}; 
    for(int ii = 0; ii < saList.GetSize(); ii++) // Output string one by one
        printf("%s\n", saList[ii]);

    vector<string> vsNames(3); // set the vector's size in construct 
    // assign string value
    vsNames[0] = "Tom"; 
    vsNames[1] = "Jenny";
    vsNames[2] = "Joy";  

    for(int jj = 0; jj < vsNames.GetSize(); jj++) // Output string one by one
        printf("%s\n", vsNames[jj]);
}

Header to Include

origin.h

Reference

Members