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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...
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 ...
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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...
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...
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...
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
...
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.
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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 ...
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...
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...