std::function 基本使用 模仿实现 lambda表达式 无变量捕获 有变量捕获 概述 在C++中,可调对象(Callable Objects)是指可以像函数一样被调用的对象,通常包括: 函数指针 仿函数 std::function lambda 表达式 它们大部分都是基于面向对象实现的,但是函数指针是个例外,因此给对象两个字加上引号其实更合适。 可调用
_id_c cppFunction(' IntegerVector get_id_c(IntegerVector x){ int n = x.size(); IntegerVector out(n); for (int i = 0; i < n; i++) { if(i == 1) out[i] = 1; else if(x[i] == x[i-1]) out[i] = out[i-1]; else out[i] = out[i-1] + 1; } return out;...
int32_tmain(){vector<pairs<int,int>>arr={{1,2},{2,2},{8,6},{1,4},{8,2},{3,7},{8,4}};autocmpFirst=[](pair<int,int>a,pair<int,int>b){returna.first<b.first;};autocmpSecond=[](pair<int,int>a,pair<int,int>b){returna.second<b.second;}autocmp_FirstInc_SecDec=[...
std::stringpath_session =params.path_prompt_cache; std::vector<llama_token> session_tokens; 至此,有关系统初始化模块的过程已经完成。 (2) 用户输入 为了接收用户输入和推理输出,源码集中定义了几个变量: std::vector<llama_token>embd_inp; std::vector<llama_token> embd; 检查编码器,现代模型大多都没...
class YourThreadPoolTaskQueue : public TaskQueue { public: YourThreadPoolTaskQueue(size_t n) { pool_.start_with_thread_count(n); } virtual bool enqueue(std::function<void()> fn) override { /* Return true if the task was actually enqueued, or false * if the caller must drop the ...
return sqrt(v.x*v.x + v.y*v.y + v.z*v.z); } void SetX(Vector* v, float value) { v->x = value; } struct Boss { char* name; int health; }; bool IsBossDead(Boss b) { return b.health == 0; } int SumArrayElements(int* elements, int size) { ...
《Effective STL》中,【条款46:考虑使用函数对象代替函数作算法的参数】中给出了用普通函数和仿函数的性能比较:在不同的STL平台上测量一百万个double的vector的两个sort调用,最差情况下,仿函数快50%,最好的快了160%。 2. STL中的functor 基本的functor有三种:Generator、Unary Function、Binary Function,对应的调用...
() << endl; TencentCloud::ShutdownAPI(); return -1; } DescribeInstancesResponse rsp = outcome.GetResult(); cout<<"RequestId="<<rsp.GetRequestId()<<endl; cout<<"TotalCount="<<rsp.GetTotalCount()<<endl; if (rsp.InstanceSetHasBeenSet()) { vector<Instance> instanceSet = rsp....
Or simple function that will return some value. Case: inline uint index4D(constant _4D& shape, constant uint& n, constant uint& c, constant uint& h, constant uint& w) { return n * shape.C * shape.H * shape.W + c * shape.H * shape.W + h * shape.W + w; } When I call...
{ std::vector<std::pair<Sentence2,double>> results; rapidfuzz::fuzz::CachedRatio<typenameSentence1::value_type>scorer(query);for(constauto& choice : choices) {doublescore = scorer.similarity(choice, score_cutoff);if(score >= score_cutoff) { results.emplace_back(choice, score); } }return...