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中吴南顾惟一笑

成功法则就是那19个字

 
 
 

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Google的C++编程规范里的几点  

2011-03-08 14:57:05|  分类: R&D |  标签: |举报 |字号 订阅

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http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml


Don't use an #include when a forward declaration would suffice.

Use streams only for logging.

Use 0 for integers, 0.0 for reals, NULL for pointers, and '\0' for chars.

Use sizeof(varname) instead of sizeof(type) whenever possible.

Use only spaces, and indent 2 spaces at a time.

Remember that sizeof(void *) != sizeof(int).

You may need to be careful with structure alignments, particularly for structures being stored on disk. Any class/structure with a int64_t/uint64_t member will by default end up being 8-byte aligned on a 64-bit system. If you have such structures being shared on disk between 32-bit and 64-bit code, you will need to ensure that they are packed the same on both architectures. Most compilers offer a way to alter structure alignment. For gcc, you can use __attribute__((packed)). MSVC offers #pragma pack() and __declspec(align()).

Use the LL or ULL suffixes as needed to create 64-bit constants. For example:
int64_t my_value = 0x123456789LL;
uint64_t my_mask = 3ULL << 48;

Do not use C++ exceptions.
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