for(let i=0;i<object.length;++i){if(!(object[i]instanceof Object))return false;for(const colName in object[i]){if(i&&(object[0][colName]===undefined))return false;const cellType=typeof object[i][colName];if(cellType!=='string'&&cellType!=='number')return false;}
if(i){for(const colName in object[0]){if(object[i][colName]===undefined)return false;}}}
return true;}