Bristol photographer Josh Dury captured the phenomenon on Tuesday
Also note the use of _call.call(_toString, original) rather than simply original.toString(). This is because original.toString might itself be hooked by the time spoof is called. By holding cached references to Function.prototype.call and Function.prototype.toString at the very beginning of the script (before any page code runs), and invoking them via those cached references, the spoof function is immune to any tampering that might have happened in the interim. It’s eating its own tail in the most delightful way.
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直观理解一下，激活函数就像神经网络里的开关或滤镜，它决定了每个神经元应该多大程度地激活，从而使网络具备强大的表达能力。
儘管這份工作對身心都有高度要求，麥肯齊表示，沒有任何事能比得上他所經歷的那些令人難以置信的時刻，以及為環境研究作出貢獻的滿足感。
他回忆自己的父亲——杜耀豪的外祖父——一个布商，曾因出轨导致妻子冲出家门欲跳桥自杀。他的童年浸泡在孤独与早熟的苦涩里，7岁就开始饮酒，18岁时曾为美军担任过七个月的翻译。对于散落世界各地的兄弟姐妹，他的评价是：“各顾各的，没有亲情。”他告诫满怀探寻热忱的杜耀豪：“不关你事，你是第二代。”