该网站展示了不同编程语言中浮点数计算的差异，并解释了导致0.1 + 0.2不等于0.3等现象的原因。
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https://0.30000000000000004.com/这个网站展示了不同语言（或者版本）中浮点数计算示例，并解释了造成这一现象的原因。来源于Twitter上BrendanEich回答为什么javascript中0.4 + 0.2 不等于 0.6的提问：https://twitter.com/ThainBBdL/status/1164505862905487366
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