flying-hero
96f6318101
新增: - backend/venv/ - Python 虚拟环境 - backend/start.sh - 启动脚本（使用虚拟环境） - backend/requirements.txt - 依赖列表 - .gitignore - 忽略虚拟环境和缓存文件 说明: - 每个项目使用独立虚拟环境 - 避免依赖冲突 - 启动脚本自动创建和激活虚拟环境
18 lines
570 B
JavaScript
18 lines
570 B
JavaScript
'use strict';
|
|
var classof = require('../internals/classof');
|
|
var hasOwn = require('../internals/has-own-property');
|
|
var isNullOrUndefined = require('../internals/is-null-or-undefined');
|
|
var wellKnownSymbol = require('../internals/well-known-symbol');
|
|
var Iterators = require('../internals/iterators');
|
|
|
|
var ITERATOR = wellKnownSymbol('iterator');
|
|
var $Object = Object;
|
|
|
|
module.exports = function (it) {
|
|
if (isNullOrUndefined(it)) return false;
|
|
var O = $Object(it);
|
|
return O[ITERATOR] !== undefined
|
|
|| '@@iterator' in O
|
|
|| hasOwn(Iterators, classof(O));
|
|
};
|