智能照明系统APP-本地串口
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LightingSystemApp-serial/.svn/pristine/68/6873462a7e1a87356d2bf7828ae...

16 lines
307 B

var isUndef = require('./isUndef');
exports = function(arr, val, start, end) {
var len = arr.length;
if (!len) return [];
if (isUndef(end)) end = len;
if (isUndef(start)) start = 0;
while (start < end) {
arr[start++] = val;
}
return arr;
};
module.exports = exports;