大约有 22,000 项符合查询结果(耗时:0.0230秒) [XML]

https://stackoverflow.com/ques... 

How can I break up this long line in Python?

... That's a start. It's not a bad practice to define your longer strings outside of the code that uses them. It's a way to separate data and behavior. Your first option is to join string literals together implicitly by making them adjacent to one another: ("This is the first line of my ...
https://stackoverflow.com/ques... 

Unresolved external symbol on static class members

...ou must add the definitions to match your declarations of X and Y unsigned char test::X; unsigned char test::Y; somewhere. You might want to also initialize a static member unsigned char test::X = 4; and again, you do that in the definition (usually in a CXX file) not in the declaration (which is...
https://stackoverflow.com/ques... 

Reserved keywords in JavaScript

...s a browser and language version agnostic way to determine if a particular string is treated as a keyword by the JavaScript engine. Credits to this answer which provides the core of the solution. function isReservedKeyword(wordToCheck) { var reservedWord = false; if (/^[a-z]+$/.test(wordToC...
https://stackoverflow.com/ques... 

Installing Google Protocol Buffers on mac

...: implicit instantiation of undefined template 'std::__1::basic_istream<char, std::__1::char_traits<char> >' return ParseFromZeroCopyStream(&zero_copy_input) && input->eof(); ^ /Applications/Xcode.app/Co...
https://stackoverflow.com/ques... 

Calling constructors in c++ without new

...new object on the stack by calling a constructor of the format Thing(const char*). The second one is a bit more complex. It essentially does the following Create an object of type Thing using the constructor Thing(const char*) Create an object of type Thing using the constructor Thing(const Th...
https://stackoverflow.com/ques... 

static constructors in C++? I need to initialize private static objects

... a class with a private static data member (a vector that contains all the characters a-z). In java or C#, I can just make a "static constructor" that will run before I make any instances of the class, and sets up the static data members of the class. It only gets run once (as the variables are read...
https://stackoverflow.com/ques... 

Safe String to BigDecimal conversion

I'm trying to read some BigDecimal values from the string. Let's say I have this String: "1,000,000,000.999999999999999" and I want to get a BigDecimal out of it. What is the way to do it? ...
https://stackoverflow.com/ques... 

Pointer arithmetic for void pointer in C

When a pointer to a particular type (say int , char , float , ..) is incremented, its value is increased by the size of that data type. If a void pointer which points to data of size x is incremented, how does it get to point x bytes ahead? How does the compiler know to add x to value of ...
https://stackoverflow.com/ques... 

Can I use a binary literal in C or C++?

...etbase will only honour bases 8, 10 and 16), but you can use either a std::string version of itoa, or (the more concise, yet marginally less efficient) std::bitset. #include <boost/utility/binary.hpp> #include <stdio.h> #include <stdlib.h> #include <bitset> #include <iost...
https://stackoverflow.com/ques... 

Ruby, remove last N characters from a string?

What is the preferred way of removing the last n characters from a string? 13 Answers ...