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std::string to char*
...ar *; you aren't allowed to change the C-style string returned by c_str(). If you want to process it you'll have to copy it first:
std::string str = "string";
char *cstr = new char[str.length() + 1];
strcpy(cstr, str.c_str());
// do stuff
delete [] cstr;
Or in modern C++:
std::vector<char>...
Are there any reasons to use private properties in C#?
...at the C# property construct can also be used with a private access modifier:
16 Answers
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Why doesn't Objective-C support private methods?
...here and in other questions), compile-time private methods are supported; if a class doesn't declare a method in its publicly available interface, then that method might as well not exist as far as your code is concerned. In other words, you can achieve all of the various combinations of visibilit...
Maximum packet size for a TCP connection
...ld use a lower one. With the advent of jumbo frames, there is no real specified maximum, and the maximum varies depending on the hardware and driver.
– WhirlWind
Apr 10 '10 at 17:08
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Adding multiple columns AFTER a specific column in MySQL
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If you want to add a single column after a specific field, then the following MySQL query should work:
ALTER TABLE users
ADD COLUMN count SMALLINT(6) NOT NULL
AFTER lastname
If you want to add multiple columns, then ...
How do I get the name of the current executable in C#?
...n be set to anything. Also getting the assembly location may not be enough if you have an exe with several dlls. Furthermore if you use several AppDomain, Assembly.GetCallingAssembly() returns null.
– user276648
May 16 '12 at 1:19
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ImageConvertor 扩展：免费图像转换器，支持JPG/PNG/WEBP格式转换和图像处...
...鼠标移动时拖动元素 document.onmousemove = function(e) { if (!isDragging) return; element.style.left = (e.clientX - offsetX) + 'px'; element.style.top = (e.clientY - offsetY) + 'px'; }; // 鼠标释放时停止拖动 document.onmouseup = function(...
Why do some functions have underscores “__” before and after the function name?
This "underscoring" seems to occur a lot, and I was wondering if this was a requirement in the Python language, or merely a matter of convention?
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Concatenating multiple text files into a single file in Bash
... all.txt into all.txt... I have this problem with grep sometimes, not sure if cat has the same behavior.
– rmeador
Jan 27 '10 at 23:54
8
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Debug vs. Release performance
...piled at all
some loop variables are taken out of the loop by the compiler if they are proven to be invariants
code written under #debug directive is not included, etc.
The rest is up to the JIT.
Full list of optimizations here courtesy of Eric Lippert.
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