CMatrix:Rows

The Rows method returns the maximum row index in the CMatrix. This is the number of rows needed to hold every possible index in a completely filled rectangular matrix.

Syntax

nRows = CMatrix:Rows()

where

    nRows is the maximum row index of the matrix. On failure or if the matrix is empty, 0 is returned.

  

This method returns the maximum row index in the matrix. Since all indices do not have to be filled in a sparse matrix, the returned value is not the same as the number of rows. For example, if the CMatrix has 1 row with 2 members, one at index [1][1] and the other at index[1][10000], then Rows = 1.

Example

Suppose a CMatrix assigned to M contains 3 members as shown below:

M = CMatrix:new()

-- create a CMatrix

M:Set( 2, 44, 1805)

-- set member 2, 44

M:Set( 50, 20, 102)

-- set member 50, 20

M:Set( 120, 2, 600.5)

-- set member 120, 2

Printf("Rows = %d", M:Rows())

-- result: Rows = 120

Related Topics

Exists

CMatrix class