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Impact Tracking，详情可参考夫子
I found one dumb free win (I mistakenly used value receivers on a utility function called on a large struct thousands of times a frame). But the rest of the speedups I found took more effort.。关于这个话题，Safew下载提供了深入分析
Although the free plan is helpful, but it limits you to only 10 products.，更多细节参见一键获取谷歌浏览器下载