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How to calculate the intersection of two sets? [duplicate]
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Use the retainAll() method of Set:
Set<String> s1;
Set<String> s2;
s1.retainAll(s2); // s1 now contains only elements in both sets
If you want to preserve the sets, create a new set to hold the intersection:
Set<String> intersection = new HashSet...
How to convert Hexadecimal #FFFFFF to System.Drawing.Color [duplicate]
I want to convert a string like #FFFFFF to System.Drawing.Color . How do you do that?
3 Answers
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async at console app in C#? [duplicate]
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Here is the simplest way to do this
static void Main(string[] args)
{
Task t = MainAsync(args);
t.Wait();
}
static async Task MainAsync(string[] args)
{
await ...
}
share
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What is the difference between `Enum.name()` and `Enum.toString()`? [duplicate]
After reading the documentation of String java.lang.Enum.name() I am not sure I understand when to use name() and when to use toString() .
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c++ boost库 序列化与反序列化 - C/C++ - 清泛网 - 专注C/C++及内核技术
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#ifndef STRUCT_SAVE_LOAD_H_
#define STRUCT_SAVE_LOAD_H_
//
#include <string>
#include <fstream>
//
#include "boost/archive/text_iarchive.hpp"
#include "boost/archive/text_oarchive.hpp"
#include "boost/archive/xml_iarchive.hpp"
#include "boost/archive/xml_oarchive.hpp"
#include "boost/se...
std::vector find查找方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
std::vector find查找方法std::vector<std::string> vecTest;std::string findStr("test");bool found = std::find(vecTest.begin(), vecTest.end(), findStr...std::vector<std::string> vecTest;
std::string findStr("test");
bool found = std::find(vecTest.begin(), vecTest.end(), findStr) != vecTest.end(...
CString 的头文件是什么？ - C/C++ - 清泛网 - 专注C/C++及内核技术
CString 的头文件是什么？#include <cstringt.h> MFC-only string objects（MFC工程）#include <atlstr.h> Non-MFC string objects（非MFC工程）#include <cstringt.h> MFC-only string objects（MFC工程）
#include <atlstr.h> Non-MFC string objects...
error: ‘std::ios_base::ios_base(const std::ios_base&)’ is private ...
...流的复制。
错误代码示例：
#include <iostream>
#include <string>
struct Person {
std::string name;
Person(std::string n):name(n){}
};
// should return a reference to std::ostream
std::ostream operator<<(std::ostream& s,const Person &p) {
s << p.name;
return s;
}
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强烈推荐一款非常mini的代码高亮开源软件--prism - 开源 & Github - 清泛网...
...应的插件，调整一些样式后，最终的展示效果如下：
string limitSql = string.Empty;
if (!string.IsNullOrEmpty(CustomerNo))
limitSql += string.Format(" and t.customerno='{0}'", CustomerNo);
代码高亮 开源软件 prism
bat 写注册表详解 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...对我们的应用有所帮助。
[MY.ADD.REG]
HKCU,MYKEY,MYVALUE,0,"STRING" 添加名为MYVALUE的字符串值项到键MYKEY下其值设为STRING
HKCU,MYKEY,MYVALUE,,STRING 添加名为MYVALUE的字符串值项到MYKEY，将其值设为STRING
HKCU,MYKEY,MYVALUE,1,77,34,05,20 添加名为MYV...