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Why is address zero used for the null pointer?
In C (or C++ for that matter), pointers are special if they have the value zero: I am adviced to set pointers to zero after freeing their memory, because it means freeing the pointer again isn't dangerous; when I call malloc it returns a pointer with the value zero if it can't get me memory; I use ...
“#include” a text file in a C program as a char[]
...
The question was about C but in case someone tries to do it with C++11 then it can be done with only little changes to the included text file thanks to the new raw string literals:
In C++ do this:
const char *s =
#include "test.txt"
;
In the text file do this:
R"(Line 1
Line 2
Line 3
...
Why and when to use Node.js? [duplicate]
...ough I've never profiled a Node.js implementation next to, say, a matching C++ implementation).
I want to get active in the community (which is apparently growing quite rapidly).
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Defining private module functions in python
...wishes.
((Btw, though it's a closely held secret, much the same holds for C++: with most compilers, a simple #define private public line before #includeing your .h file is all it takes for wily coders to make hash of your "privacy"...!-))
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程序员才能听得懂的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...“我们就是这么设计的。”
4、换一个电灯泡需要几个C++程序员？你还在用面向过程的思维考虑问题。一个设计良好的电灯泡类必然封装了换灯泡的方法，所以你要做的就是调用“换电灯泡”方法。
5、一个微软工程师正走...
Is there auto type inferring in Java?
Is there an auto variable type in Java like you have in C++?
6 Answers
6
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minimum double value in C/C++
...nation for my -1: who or what says that -DBL_MAX is guaranteed by the C or C++ language to be representable, let alone the minimum representable value? The fact that most FP hardware is IEEE 754-conformant, and it uses this representation, doesn't mean -DBL_MAX is guaranteed to work on any standard-...
Why can't I initialize non-const static member or static array in class?
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Why I can't initialize static data members in class?
The C++ standard allows only static constant integral or enumeration types to be initialized inside the class. This is the reason a is allowed to be initialized while others are not.
Reference:
C++03 9.4.2 Static data members
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What's the difference between a method and a function?
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For 1), you should also add that methods in C++ are called member functions. Thus, the difference between functions and methods in this context is analogous to the difference between functions and member functions in C++. Furthermore, languages like Java only have meth...
Python Graph Library [closed]
...h python library: graph-tool.
It is very fast, since it is implemented in C++ with the Boost Graph Library, and it contains lots of algorithms and extensive documentation.
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