C++11 新特性
常用新特性汇总
https://zhuanlan.zhihu.com/p/102419965?utm_source=qq
https://blog.csdn.net/jiange_zh/article/details/79356417
C++11 FAQ中文版
https://wizardforcel.gitbooks.io/cpp-11-faq/49.html
https://legacy.gitbook.com/book/wizardforcel/cpp-11-faq/details
智能指针
shared_ptr, make_shared, shared_from_this
https://docs.microsoft.com/en-us/cpp/cpp/smart-pointers-modern-cpp?view=vs-2019
https://docs.microsoft.com/en-us/cpp/cpp/how-to-create-and-use-shared-ptr-instances?view=vs-2019
https://www.cnblogs.com/jiayayao/p/6128877.html
c++11中的shared_from_this
https://blog.csdn.net/caoshangpa/article/details/79392878?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-2.nonecase&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-2.nonecase
https://zh.cppreference.com/w/cpp/memory/enable_shared_from_this/shared_from_this
raw指针需要手动new delete
而智能指针可以自动在不需要时删除对象，不用显示调用delete。
#include class A: public std::enable_shared_from_this{
}
随机数生成
https://www.cnblogs.com/egmkang/archive/2012/09/06/2673253.html
https://en.cppreference.com/w/cpp/numeric/random
设置seed
#include
#include
using namespace std;
std::random_device rand_seed;
std::mt19937 mt;
//std::mt19937 mt(rand_seed());
int init_num = 20;
mt.seed(1);
for (int i = 0; i < init_num; i++) {
cout << dist_fp32(mt) << " ";
}
cout << endl;
mt.seed(rand_seed());
for (int i = 0; i < init_num; i++) {
cout << dist_fp32(mt) << " ";
}
cout << endl;
多线程
https://blog.csdn.net/ouyangfushu/article/details/80199140
获取多线程返回值：
https://www.cnblogs.com/qicosmos/p/3534211.html
简单范例：
#include
#include
std::string simplefunc(std::string a){
return a;
}
int main(){
auto future = std::async(std::launch::async, simplefunc, "hello world");
std::string simple = future.get();
cout<
std::launch::async：在调用async就开始创建线程。
std::launch::deferred：延迟加载方式创建线程。调用async时不创建线程，直到调用了future的get或者wait时才创建线程。
线程延时
std::chrono::milliseconds dura(1000); //定一个5秒的时间
std::this_thread::sleep_for(dura); //休息一定时常
lambda表达式
https://www.cnblogs.com/DswCnblog/p/5629165.html
std::bind, std::function
https://en.cppreference.com/w/cpp/utility/functional/bind
ttps://www.jianshu.com/p/f191e88dcc80
https://blog.csdn.net/tennysonsky/article/details/77447804
https://stackoverflow.com/questions/6610046/stdfunction-and-stdbind-what-are-they-and-when-should-they-be-used
基于bind，function和random实现不同随机数生成方式
int seed = 1;
float range0 = 0;
float range1 = 10;
std::mt19937 mt(seed);
std::uniform_real_distribution unoform_rand(range0, range1);
std::normal_distribution<> normal_rand(range0, range1);
std::function rand_generator = bind(unoform_rand, mt);
for (int i = 0; i < 10; i++) {
cout << rand_generator() << " ";
}
cout << endl;
rand_generator = std::bind(normal_rand, mt);
for (int i = 0; i < 10; i++) {
cout << rand_generator() << " ";
}
cout << endl;
谷歌编码风格
https://zh-google-styleguide.readthedocs.io/en/latest/
sublime text 格式化工具
https://github.com/timonwong/SublimeAStyleFormatter
SublimeAStyleFormatter google风格配置
"style": "google",
"attach-namespaces": true,
"attach-classes": true,
"indent-switches": true,
"pad-header": true,
"align-pointer": "type",
"unpad-paren": true,
utility
fp16库
http://half.sourceforge.net/
https://github.com/Maratyszcza/FP16/tree/master/third-party
执行shell命令 system和popen，可以用于执行shell命令，间接获取文件夹下文件名称等
https://www.cnblogs.com/caosiyang/archive/2012/06/25/2560976.html
https://en.cppreference.com/w/cpp/utility/program/system
C++ STL正确删除元素方法
vector data = { 1,2,3,4,5,6,7,8 };
for (auto itr = data.begin(); itr != data.end();) {
if (*itr == 8) {
itr=data.erase(itr);
}
else {
itr++;
}
} data.erase(itr);itr++，或者data.erase(itr++)均不可取！！！处理最后一个元素可能有意外。