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When do we have to use copy constructors?
...st an example, but you should point out the better solution is to use std::string. The general idea is that only utility classes that manage resources need to overload the Big Three, and that all other classes should just use those utility classes, removing the need to define any of the Big Three.
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Error “initializer element is not constant” when trying to initialize variable with const
...n object that has static storage duration shall be constant expressions or string literals.
In section 6.6, the spec defines what must considered a constant expression. No where does it state that a const variable must be considered a constant expression. It is legal for a compiler to extend thi...
String concatenation: concat() vs “+” operator
Assuming String a and b:
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What are Aggregates and PODs and how/why are they special?
...er-defined constructor is present, it means that the user needs to do some extra work to initialize the members therefore brace initialization would be incorrect. If virtual functions are present, it means that the objects of this class have (on most implementations) a pointer to the so-called vtabl...
libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术
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process_func(req, res);
// 写回应
string output;
res.SerializeToString(&output);
int status = bufferevent_write(ev_buf, output.c_str(), output.length());
}
}
void buffer_on_write(struct bufferevent *ev_buf, void *opqaue)
{
// ...
Is there a method for String conversion to Title Case?
Are there any built in methods available to convert a string into Title Case format?
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Objective-C and Swift URL encoding
I have a NSString like this:
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Regular Expression to get a string between parentheses in Javascript
I am trying to write a regular expression which returns a string which is between parentheses. For example: I want to get the string which resides between the strings "(" and ")"
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How can you strip non-ASCII characters from a string? (in C#)
How can you strip non-ASCII characters from a string? (in C#)
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json_encode is returning NULL?
...e at least PHP 5.5, you can use json_last_error_msg(), which will return a string describing the problem.
If you don't have 5.5, but are on/above 5.3, you can use json_last_error() to see what the problem is.
It will return an integer, that you can use to identify the problem in the function's doc...