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What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
...ction_name
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1208r5.pdf went into C++20, so we have yet another way to do it.
The documentation says:
constexpr const char* function_name() const noexcept;
6 Returns: If this object represents a position in the body of a function,
returns an im...
柳青：滴滴每天面临向死而生的挑战 永远热泪盈眶 - 资讯 - 清泛网 - 专注C/...
...渗透，震人发聩：
柳青2016年滴滴年会演讲全文，无删节版(创业者共勉！)：
昨天还在跟Will聊说我今天讲什么，他说不用有压力，因为我今天会宣布年终奖和今天的抽奖，我说完了也没人在意你讲什么，讲什么都行。所以我现...
Finding all possible combinations of numbers to reach a given sum
...ins and mathematical model of it at http://jaqm.ro/issues/volume-5,issue-2/pdfs/patterson_harmel.pdf (or Google coin change problem).
By the way, the Scala solution by Tsagadai, is interesting. This example produces either 1 or 0. As a side effect, it lists on the console all possible solutions. It...
What is the difference between a URI, a URL and a URN?
...u could also identify the text as file://hostname/sharename/RomeoAndJuliet.pdf.
That would also be a URI, but more specifically a URL because it locates the text.
*Uniform Resource Name
(Note that my example is adapted from Wikipedia)
...
Generating an MD5 checksum of a file
...used this solution but it uncorrectly gave the same hash for two different pdf files. The solution was to open the files by specifing binary mode, that is: [(fname, hashlib.md5(open(fname, 'rb').read()).hexdigest()) for fname in fnamelst] This is more related to the open function than md5 but I th...
Which is faster: Stack allocation or Heap allocation
...a access."
Declare e volatile, but volatile is often compiled incorrectly (PDF).
Take the address of e inside the loop (and maybe assign it to a variable that is declared extern and defined in another file). But even in this case, the compiler may notice that -- on the stack at least -- e will alwa...
Generate a heatmap in MatPlotLib using a scatter data set
...n't mean to be an idiot, but how do you actually have this output to a PNG/PDF file instead of only displaying in an interactive IPython session? I'm trying to get this as some sort of normal axes instance, where I can add a title, axis labels, etc. and then do the normal savefig() like I would do f...
List of ANSI color escape sequences
...ary sources at: ecma-international.org/publications/files/ECMA-ST/Ecma-048.pdf and itu.int/rec/… . Also some interpretations forget the color space Id in the 2 (16M-color RGB)/3 (16M-color CMY) /4 (??? CMYK) forms - e.g. it should be \033[38:2::255:255:255m for a White 16M foreground and not \033[...
Group vs role (Any real difference?)
...rence between roles and groups.
http://profsandhu.com/workshop/role-group.pdf
A group is a collection of users with a given set of permissions assigned to the group (and transitively, to the users). A role is a collection of permissions, and a user effectively inherits those permissions when he ac...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
...e Scala Style Guide (page 21): http://www.codecommit.com/scala-style-guide.pdf
The recommended syntax for higher order methods calls is to always use braces, and to skip the dot:
val filtered = tupleList takeWhile { case (s1, s2) => s1 == s2 }
For "normal" metod calls you should use the dot a...