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
23 lines
764 B
JavaScript
23 lines
764 B
JavaScript
'use strict';
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var $ = require('../internals/export');
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var call = require('../internals/function-call');
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var iterate = require('../internals/iterate');
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var isCallable = require('../internals/is-callable');
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var aCallable = require('../internals/a-callable');
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var Map = require('../internals/map-helpers').Map;
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// `Map.keyBy` method
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// https://github.com/tc39/proposal-collection-methods
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$({ target: 'Map', stat: true, forced: true }, {
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keyBy: function keyBy(iterable, keyDerivative) {
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var C = isCallable(this) ? this : Map;
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var newMap = new C();
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aCallable(keyDerivative);
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var setter = aCallable(newMap.set);
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iterate(iterable, function (element) {
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call(setter, newMap, keyDerivative(element), element);
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});
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return newMap;
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}
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});
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