Java 开发者们，是否曾在面试中被问及“0.1 + 0.2 为什么不等于 0.3”？这个问题看似简单，实则揭示了 Java 中一个常见的、但又容易被忽视的数字精度问题。 这个问题并非 Java 独有，它源于 IEEE 754 双精度浮点数标准，几乎所有使用该标准的语言（如 Java 、 Python 、 C++ ）都会遇到。 但由于 Java ...

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The S&P U.S. Style Indices methodology document sheds more light on how IJS's Index has selected its 470 securities.

对了，补充一点：别迷信大厂方案。某知名CRM的积分模块在直销场景跑分只有31分（满分100），因为它的设计假设用户有“完整注意力”——但现实中直销员可能边骑电动车边操作。 真正有效的体验，必须适配碎片化+高干扰环境 。

NetApp CEO George Kurian in an exclusive meeting with CRN talked about the importance of transforming data for AI, and about ...

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The allure of global travel, of experiencing diverse cultures, and seeing the world’s myriad wonders, is a powerful motivator ...