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What's the difference between a Future and a Promise?

...ts completion. An example is also given on the list: f.then((s -> aStringFunction(s)).thenAsync(s -> ...); Note that the final API is slightly different but allows similar asynchronous execution: CompletableFuture<String> f = ...; f.thenApply(this::modifyString).thenAccept(System...
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php create object without class [duplicate]

... /* outputs: object(stdClass)#2 (1) { ["property"]=> string(10) "Here we go" } */ Also as of PHP 5.4 you can get same output with: $object = (object) ['property' => 'Here we go']; share ...
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C++11 tuple 这一篇就够了 - C/C++ - 清泛网 - 专注C/C++及内核技术

...的多个tuple)。 #include <iostream> #include <utility> #include <string> #include <tuple> int main () { std::tuple<float,std::string> mytuple (3.14,"pi"); std::pair<int,char> mypair (10,'a'); auto myauto = std::tuple_cat ( mytuple, mypair ); std::cout << "myauto contai...
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std::vector排序 - C/C++ - 清泛网 - 专注C/C++及内核技术

...::vector排序若vector内容进行过比较运算符重载(如int, std::string等),则直接sort:std::sort(vecTest.begin(), vecTest.end())默认升序。其他情...若vector内容进行过比较运算符重载(如int, std::string等),则直接sort: std::sort(vecTest.begin(), vecTe...
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XXX.cc:100: error: ‘::strerror’ has not been declared - C/C++ - 清泛网 - 专注C/C++及内核技术

XXX.cc:100: error: ‘::strerror’ has not been declared#include <string.h>解决。#include <string.h> 解决。strerror
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sizeof、strlen简单总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

sizeof、strlen简单总结sizeofstrlenconst char* p4字符串长度std::string4字符串长度"......"字符串长度+1 (' 0')字符串长度 sizeof strlen const char* p 4 字符串长度 std::string 4 字符串长度 "......" 字符串长度+1 ('\0')...
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函数、变量需引入的头文件对照表(持续更新) - C/C++ - 清泛网 - 专注C/C+...

...续更新)GetModuleFileNameEx,GetModuleFileName#include <Psapi.h>ConvertStringSidToSid#include <sddl.h>memset, memcpy#include<string.h>FL... GetModuleFileNameEx, GetModuleFileName #include <Psapi.h> ConvertStringSidToSid #include <sddl.h> memset, memcpy #include <strin...
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Linux编程中各种头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术

...务的函数原型,例如read函数、write函数和getpid函数 3. string.h 提供比如 bzero,bcopy,bcmp,memset,memcpy memcmp 等函数。 4.netdb.h定义了与网络有关的结构,变量类型,宏,函数。例如: struct hostent *gethostbyaddr(const void *addr, size_t len, int...
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std::stringstream ss; 直接使用ss.str().c_str() 字符串指针可能导致崩溃 ...

std::stringstream ss; 直接使用ss.str().c_str() 字符串指针可能导致崩溃std::stringstream ss;const char* ch = ss str() c_str();call_func(ch);这种写法在系统内存不足时,ss会立马释放内存,字符串指针ch可能会非法访问导致崩溃。代码最好的是 std::s...
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js实现ReplaceAll全部替换 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...匹配。 除此之外,也可以添加 Stirng对象的原型方法: String.prototype.replaceAll = function(s1,s2){ return this.replace(new RegExp(s1,"gm"),s2); } 这样就可以像使用replace 方法一样使用replaceAll了 str.replaceAll("word","newWord"); 总结一下, ...