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Executing multi-line statements in the one-line command-line?
...
this style can be used in makefiles too (and in fact it is used quite often).
python - <<EOF
import sys
for r in range(3): print 'rob'
EOF
or
python - <<-EOF
import sys
for r in range(3): print 'rob'
EOF
in latter case leading tab character...
Understanding generators in Python
I am reading the Python cookbook at the moment and am currently looking at generators. I'm finding it hard to get my head round.
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Optional query string parameters in ASP.NET Web API
...isbn="", string somethingelse="", DateTime? date= null)
{
// ...
}
and everything will work out of the box.
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C dynamically growing array
I have a program that reads a "raw" list of in-game entities, and I intend to make an array holding an index number (int) of an indeterminate number of entities, for processing various things. I would like to avoid using too much memory or CPU for keeping such indexes...
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How to make a copy of a file in android?
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To copy a file and save it to your destination path you can use the method below.
public static void copy(File src, File dst) throws IOException {
InputStream in = new FileInputStream(src);
try {
OutputStream out = new File...
How to convert byte array to string and vice versa?
I have to convert a byte array to string in Android, but my byte array contains negative values.
22 Answers
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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注IT技能提升
...> punk;
下面三个例子完全相同
CComPtr<IXXX> pno;
CComPtr<IXXX,&__uuidof(IXXX)> pno;
CComPtr<IXXX,&IID_IXXX> pno;
CComQIPtr可以用任何一个类型的接口指针初始化，如果初始化的值与CComQIPtr的类型相同，那么构造函数简单调用 指针的AddRef,但是，如...
Visul C++中CList用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...和构造方法
CList的声明如下：
template< class TYPE, class ARG_TYPE >class CList : public CObject
由此，我们知道CList是一个模版类，那么他的两个class是什么意思呢？
下面看一个例子：
CList<CString ,CString&> list;//链表对象1
CList<CString,CString> l...
64 bit OS下int占几个字节？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...混淆。int是由编程语言设计决定的，不受编译器的影响。__int64才是8位的。另外，指针是受编译器 OS影响的，3...int固定4字节，不要受64 bit的混淆。int是由编程语言设计决定的，不受编译器的影响。
__int64才是8位的。
另外，指...
C/C++ 如何向上取整？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...上取整？一般地，向上取整有两种方法：#include <math.h>int _tmain(int argc, _TCHAR* argv[]){int a = 6, b = 5; ceil函数printf("%d...一般地，向上取整有两种方法：
#include <math.h>
int _tmain(int argc, _TCHAR* argv[])
{
int a = 6, b = 5;
//ceil函数
prin...