DataGrid

DataGrid

Description

A datagrid datastructure

Functions

• delete
• getValue
• new
• setValue

delete

Description

Deletes data grid

Definition

delete()

Code

function DataGrid:delete()
    self.grid = nil
end

getValue

Description

Gets value at given row and column

Definition

getValue(integer rowIndex, integer colIndex)

Arguments

integer	rowIndex	index of row
integer	colIndex	index of column

Return Values

integer	value	value at the given position

Code

function DataGrid:getValue(rowIndex, colIndex)
    if rowIndex < 1 or rowIndex > self.numRows then
        Logging.error( "rowIndex out of bounds!" )
        printCallstack()
        return nil
    end
    if colIndex < 1 or colIndex > self.numColumns then
        Logging.error( "colIndex out of bounds!" )
        printCallstack()
        return nil
    end

    return self.grid[rowIndex][colIndex]
end

new

Description

Creating data grid

Definition

new(integer numRows, integer numColumns, table? customMt)

Arguments

integer	numRows	number of rows
integer	numColumns	number of columns
table?	customMt	custom metatable

Return Values

table?	instance	instance of object

Code

function DataGrid.new(numRows, numColumns, customMt)
    local self = setmetatable( { } , customMt or DataGrid _mt)

    self.grid = { }
    self.numRows = numRows
    self.numColumns = numColumns
    for _ = 1 , numRows do
        table.insert( self.grid, { } )
    end

    return self
end

setValue

Description

Set value at given row and column

Definition

setValue(integer rowIndex, integer colIndex, table value)

Arguments

integer	rowIndex	index of row
integer	colIndex	index of column
table	value	value at the given position

Code

function DataGrid:setValue(rowIndex, colIndex, value)
    if rowIndex < 1 or rowIndex > self.numRows then
        Logging.error( "rowIndex out of bounds!" )
        printCallstack()
        return false
    end
    if colIndex < 1 or colIndex > self.numColumns then
        Logging.error( "colIndex out of bounds!" )
        printCallstack()
        return false
    end

    self.grid[rowIndex][colIndex] = value
    return true
end