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Compile time string hashing

...space my_hash::literals; void one() {} void two() {} void other() {} void foo( const std::string& value ) { switch( my_hash::hash(value) ) { case "one"_hash: one(); break; case "two"_hash: two(); break; /*many more cases*/ default: other(); break; } } live example. Note...
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What is a regular expression for a MAC Address?

...2})$/i or /^([0-9a-F]{1,2}[\.:-]){5}([0-9a-F]{1,2})$/ exm: 00:27:0e:2a:b9:aa, 00-27-0E-2A-B9-AA, 0.27.e.2a.b9.aa ... share | improve this answer | follow ...
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苹果第三财季大中华区营收132.3亿美元 同比增长112% - 资讯 - 清泛网 - 专...

...营业利润为140.83亿美元,较去年同期的102.82亿美元增长36.9%; ——总营业费用为55.98亿美元,较去年同期的44.53亿美元增长25.7%; ——净利润为106.77亿美元,较去年同期的77.48亿美元增长37.8%; ——每股摊薄收益为1.85美元,较...
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What's the difference between passing by reference vs. passing by value?

...here's an example in some C-like language of a function declaration: void foo(int param) { // line 1 param += 1; } And here's an example of calling this function: void bar() { int arg = 1; // line 2 foo(arg); // line 3 } Using this example, I want to define some important bits of t...
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How to fix Git error: object file is empty?

...1 pointer in cache-tree dangling blob 03511c9868b5dbac4ef1343956776ac508c7c2a2 missing blob 8b61d0135d3195966b443f6c73fb68466264c68e missing blob e89896b1282fbae6cf046bf21b62dd275aaa32f4 dangling blob dd09f7f1f033632b7ef90876d6802f5b5fede79a missing blob caab8e3d18f2b8c8947f79af7885cdeeeae192fd miss...
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Array include any value from another array?

...de? was the fastest, set disjoint the slowest: gist.github.com/jaredmoody/d2a1e83de2f91fd6865920cd01a8b497 – Jared May 3 '17 at 17:25 4 ...
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How can I recursively find all files in current and subfolders based on wildcard matching?

... Use find for that: find . -name "foo*" find needs a starting point, and the . (dot) points to the current directory. share | improve this answer ...
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Hash function that produces short hashes?

... unique_id = uuid.uuid4() # unique_id = UUID('8da617a7-0bd6-4cce-ae49-5d31f2a5a35f') hash = hashlib.sha1(str(unique_id).encode("UTF-8")) # hash.hexdigest() = '882efb0f24a03938e5898aa6b69df2038a2c3f0e' result = base64.b64encode(hash.digest()) # result = b'iC77DySgOTjliYqmtp3yA4osPw4=' The result ...
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Node.js get file extension

...ount: 0, _maxListeners: undefined, size: 1047621, path: '/tmp/upload_2a4ac9ef22f7156180d369162ef08cb8', name: 'blob', **type: 'image/png'**, hash: null, lastModifiedDate: Wed Jul 20 2016 16:12:21 GMT+0300 (EEST), _writeStream: WriteStream { ... }, writable: true, doma...
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Why does Java switch on contiguous ints appear to run faster with added cases?

...cf: pop rbp 0x00000000024f01d0: test DWORD PTR [rip+0xfffffffffdf3fe2a],eax # 0x0000000000430000 ; {poll_return} 0x00000000024f01d6: ret With 18 cases, the assembly looks like this (notice the array of pointers which is used and...