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日期 产品 语录 视频 January 30, 1984 Macintosh The computer for the rest of us. Steve Jobs Introduces the Macintosh October 23, 2001 iPod 1,000 songs in your 阅读全文
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import numpy as np from IPython.display import display, Math P_X = [(0, 0.5), (1, 0.5)] E_X = sum([x * p for x, p in P_X]) sigma = np.sqrt(sum([p * (x 阅读全文
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在运行 docker info 命令时遇到如下警告: WARNING: Plugin "/Users/user/.docker/cli-plugins/docker-debug" is not valid: failed to fetch metadata: fork/exec /Users/use 阅读全文
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ISO 8601 ISO 8601 是大多数讨论时区时使用的标准。 UTC(Coordinated Universal Time,协调世界时),也称 GMT(Greenwich Mean Time,格林尼治标准时间)。两者的准确定义有区别,不过一般可以当做同一回事。 中国常用时区:(UTC+08:0 阅读全文