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“Default Activity Not Found” on Android Studio upgrade
... android:name="com.your.package.name.YourActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-fil...
How do I get today's date in C# in mm/dd/yyyy format?
...
DateTime.Now.ToString("M/d/yyyy");
http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx
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get path for my .exe [duplicate]
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In a Windows Forms project:
For the full path (filename included): string exePath = Application.ExecutablePath;
For the path only: string appPath = Application.StartupPath;
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10 条真心有趣的 Linux 命令 - 创意 - 清泛网 - 专注C/C++及内核技术
...会限制一个句子的输出长度。
# fortune -s
3.yes
# yes <string>
这个命令会不停打印字符串，直到用户把这进程给结束掉。
# yes unixmen
4.figlet
这个命令可以用apt-get安装，安装之后，在/usr/share/figlet可以看到一些ascii字体文件...
boost自定义composite_key_compare比较函数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...DType,&TParam::ID>
>,
composite_key_compare<
//std::less<std::string>
customize_compare
>
>,
ordered_non_unique< tag<TParamValidIndex>,
member<TParam,bool,&TParam::IsValid> >
>
>TParamSet;
typedef boost::multi_index::index<TParamSet,TParamIDIndex>::type TParamSetBy...
STL：accumulate与自定义数据类型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...分析...
假设自定义数据类型为：
struct Student
{
string name; // 学生姓名
int total; // 四级分数
};
那么我们可能要定义如下列的类：
#include <iostream>
#include <algorithm>
#include <numeric>
#include <vector>
#include <string>
u...
warning C4172: returning address of local variable or temporary - C/C+...
...
//返回单词出现的行号set
const set<int> & TextQuery::RunQuery(string word) const
{
map< string,set<int> >::const_iterator it = m_mapWordLine.find(word);
if(it != m_mapWordLine.end())
return it->second;
else
return set<int>();//emp...
error C2804:binary \'operator +\' has too many parameters - C/C++ - 清泛网 - 专注C/C++及内核技术
...or +' has too many parameters代码如下：#include <iostream> #include <string> clas...error C2804:binary 'operator +' has too many parameters
代码如下：
#include <iostream>
#include <string>
class Sales_item
{
// private members
private:
std::string i...
passing xxx as \'this\' argument of xxx discards qualifiers - C/C++ - 清泛网 - 专注C/C++及内核技术
...>
using namespace std;
class StudentT {
public:
int id;
string name;
public:
StudentT(int _id, string _name) : id(_id), name(_name) {
}
int getId() { // 应该声明为const成员
return id;
}
string getName() { // 应该声明为const成员
...
php中0,null,empty,空,false,字符串关系详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ric($a)){
echo "0 is numeric <br/>";
} //output:0 is numeric
if(is_string($a)){
echo "0 is string <br/>";
} //no output
if(strval($a)==''){
echo "转换成字符串的0 is '' <br/>";
} //no output
$b = '';
if($b==0){
echo "'' 等于 0 <br/>";
} //output:'' 等于 0...