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知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。知乎凭借认真、专业、友善的社区氛围、独特的产品机制以及结构化和易获得的优质内容，聚集了中文互联网科技、商业、影视
- 如何评价ThinkBook 14+ 16+ 2025款，是否值得购买？ - 知乎
R7 AI H 350+32 1T+3k120hz的14+卖6299，R7 AI H 350+32 1T+3 2k165hz的16+卖6499，基本上和U5是一个价格了。 这在去年问题不大，因为8845H产品力吊打125H，但是到了今年酷睿CPU，续航稳定进步，显卡也挤了牙膏，碰上AMD开始玩大小核+显卡架构小改后直接缩50%规格，还这么定价的
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Typically, a h in file is a header template that is filled in to become the actual header by a configure script based on the outcome of several tests for features present on the target platform Share
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Se e g GCC 4 8 0 bits stdc++ h source Using it would include a lot of unnecessary stuff and increases compilation time Edit: As Neil says, it's an implementation for precompiled headers If you set it up for precompilation correctly it could, in fact, speed up compilation time depending on your project
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The cost of opening a file, discarding all its contents, and closing it over and over might not sound like much, but for a large header included transitively by hundreds of other headers (e g windows h, the low-level stuff providing simple type definitions like stdint h, types h, etc ), the difference between opening it exactly once per source file and opening it a hundred times (where only
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h files, or header files, are used to list the publicly accessible instance variables and methods in the class declaration cpp files, or implementation files, are used to actually implement those methods and use those instance variables The reason they are separate is because h files aren't compiled into binary code while cpp files are
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