Run results for: countNeighbours

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Browser: Chrome 53

Operating system: Mac OS X 10.11.3

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Reduce	252072.8 Ops/sec
getCell	317707.5 Ops/sec

Script Preparation code:

var row = 1;
var col = 2;
var data = [[1, 0, 0, 1, 0],
            [0, 1, 0, 0, 0],
            [0, 0, 1, 0, 1],
            [1, 0, 0, 0, 0],
            [0, 0, 1, 0, 0]];

Tests:

Reduce
return data.reduce((r, v, i) => i>row+1 || i<row-1 ? r : v.reduce((c, v, i) => i>col+1 || i<col-1 ? c : c + v, r), 0) - data[row][col];
getCell
function getCellValue(r,c) { return (data[r]&&data[r][c])?data[r][c]:0; }; return getCellValue(row-1,col-1)+getCellValue(row-1,col)+getCellValue(row-1,col+1)+getCellValue(row,col-1)+getCellValue(row,col+1)+getCellValue(row+1,col-1)+getCellValue(row+1,col)+getCellValue(row+1,col+1);

Run results for: countNeighbours

Reduce

getCell