大约有 41,000 项符合查询结果（耗时：0.0357秒） [XML]
In what cases do I use malloc and/or new?
... Always use new.
If you need a big chunk of data just do something like:
char *pBuffer = new char[1024];
Be careful though this is not correct:
//This is incorrect - may delete only one element, may corrupt the heap, or worse...
delete pBuffer;
Instead you should do this when deleting an arra...
Fastest way to flatten / un-flatten nested JSON objects
...erty = "", index = 0;
while (index < length) {
var char = path.charAt(index);
if (char === "[") {
var start = index + 1,
end = path.indexOf("]", start),
cursor = cursor[property] = cursor[property] || [],
...
Why should casting be avoided? [closed]
... compiler won't warn you about those potential problems. Just for example, char a=(char)123456;. The exact result of this implementation defined (depends on the size and signedness of char), and except in rather strange situations, probably isn't useful. C casts also vary in whether they're somethin...
How do you get the list of targets in a makefile?
...al with false positives from other output sections.
if ($$1 !~ "^[#.]")
Selectively ignores blocks:
# ... ignores non-targets, whose blocks start with # Not a target:
. ... ignores special targets
All other blocks should each start with a line containing only the name of an explicitly defined...
How do I add a newline to a TextView in Android?
... my own resulting in the following solution for rendering line feed escape chars:
string = string.replace("\\\n", System.getProperty("line.separator"));
Using the replace method you need to filter escaped linefeeds (e.g. '\\\n')
Only then each instance of line feed '\n' escape chars gets rendere...
fstream默认不支持中文路径和输出整数带逗号的解决办法 - C/C++ - 清泛网 -...
...整数转换为字符串再进行输出，如：
int i = 123456789;
char ch[20];
sprintf((char *)&ch, "%d", i); //整数数据转换为字符数组。
outfile << "i = " << ch << '/n'; //输出不带逗号
上述问题的解决方法有很多，大家可以试试。
fstream 中文路...
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
...是否存在用函数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...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...
scoped_ptr 与 auto_ptr 与 shared_ptr 区别总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...cout<<p.use_count()<<"::"<<p.get()<<std::endl;
}
#include <algorithm>
char upCase(char c)
{
return toupper(c);
}
int _tmain(int argc, _TCHAR* argv[])
{
shared_ptr<Foo> sp1(new Foo());
shared_ptr<Foo> sp2(sp1);
shared_ptr<Foo> sp3;
sp1->print();
sp2->print();
std::cout<<sp1...
C++中判断文件、目录是否存在的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...种方式是直接调用c的函数库。
就是函数 int _access(const char* path,int mode);
这个函数的功能十分强大。
可以看看msdn的详细介绍
#include <io.h>
#include <stdio.h>
#include <stdlib.h>
int main( void )
{
// Check for existence.
if( (_access( "c...
vc/mfc *通配符 批量删除文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...tion函数：#include "stdafx.h"#include <windows.h>int _tmain(int argc, _TCHAR*...直接上代码，可直接运行亲测有效，使用SHFileOperation函数：
#include "stdafx.h"
#include <windows.h>
int _tmain(int argc, _TCHAR* argv[])
{
LPTSTR delFileName = L"c:/test/test*.txt"...