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
24 lines
758 B
JavaScript
24 lines
758 B
JavaScript
'use strict';
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var aSet = require('../internals/a-set');
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var SetHelpers = require('../internals/set-helpers');
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var clone = require('../internals/set-clone');
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var getSetRecord = require('../internals/get-set-record');
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var iterateSimple = require('../internals/iterate-simple');
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var add = SetHelpers.add;
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var has = SetHelpers.has;
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var remove = SetHelpers.remove;
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// `Set.prototype.symmetricDifference` method
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// https://tc39.es/ecma262/#sec-set.prototype.symmetricdifference
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module.exports = function symmetricDifference(other) {
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var O = aSet(this);
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var keysIter = getSetRecord(other).getIterator();
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var result = clone(O);
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iterateSimple(keysIter, function (e) {
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if (has(O, e)) remove(result, e);
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else add(result, e);
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});
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return result;
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};
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