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What exactly is a reentrant function?
... does it always mean that it is reentrant?
No.
For example, let's have a C++ function that takes both a lock, and a callback as a parameter:
#include <mutex>
typedef void (*callback)();
std::mutex m;
void foo(callback f)
{
m.lock();
// use the resource protected by the mutex
...
How do I increase the capacity of the Eclipse output console?
...
For CDT users / C/C++ build, also adjust the setting
in Window > Preferences
under C/C++ > Build > Console (!)
(This time in number of lines.)
This also affects the "CDT Global Build Console".
...
How to install 2 Anacondas (Python 2 and 3) on Mac OS
I'm relatively new in Mac OS. I've just installed XCode (for c++ compiler) and Anaconda with the latest Python 3 (for myself). Now I'm wondering how to install properly second Anaconda (for work) with Python 2?
...
Regular expression for a hexadecimal number?
...the character in hexadecimal. I've tried and it works. I use framework for C++ Qt but it can solve problems in other cases, depends on the flavor you need to use (php, javascript, python , golang, etc.).
This answer was taken from:http://ult-tex.net/info/perl/
...
What key shortcuts are to comment and uncomment code?
...trl+K, Ctrl+U. I would guess that these are the defaults, at least in the C++ defaults, but I don't know for sure. The best way to find out is to check your settings.)
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Java: how to initialize String[]?
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I believe you just migrated from C++, Well in java you have to initialize a data type(other then primitive types and String is not a considered as a primitive type in java ) to use them as according to their specifications if you don't then its just like an ...
Getting a list item by index
...
Visual Basic, C#, and C++ all have syntax for accessing the Item property without using its name. Instead, the variable containing the List is used as if it were an array.
List[index]
See for instance:
https://msdn.microsoft.com/en-us/library/0...
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C语言判断文件是否存在 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ccess(const char *filename, int amode);amode参数为0时表示检查文件的存在性，如果文件存...用函数access，头文件是io.h，原型：
int access(const char *filename, int amode);
amode参数为0时表示检查文件的存在性，如果文件存在，返回0，不存在，返...
std::vector排序 - C/C++ - 清泛网 - 专注C/C++及内核技术
...：
bool SortByM1( const Test &v1, const Test &v2) //注意：本函数的参数的类型一定要与vector中元素的类型一致
{
return v1.member1 < v2.member1;//升序排列
}
....
std::sort(vecTest.begin(), vecTest.end(), SortByM1)vector 排序