1.2.1 std::random_device的深入探索 std::random_device是一个真正的随机数生成器,它不依赖于任何算法,而是直接从系统的随机数源获取数据。这使得它非常适合为其他随机数引擎提供种子,确保每次程序运行时都能产生不同的随机序列。 std::random_device rd; // 创建一个真正的随机数生成器 std::mt19937 gen(rd...
#include<stdio.h>#include<stdlib.h>#includeintmain(){srand(time(0));// use current time as seedconstintloop_count=100;for(inti=0;i<loop_count;i++){intrandom_value=rand();// get a random number in range [0, RAND_MAX]printf("%d\n",random_value);}return0;} RAND_MAX的取值? R...
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std::mt19937& get_random_generator() { static thread_local std::mt19937 generator( std::chrono::system_clock::now().time_since_epoch().count()); return generator; } void* aligned_alloc(size_t size, size_t alignment) { void* ptr = nullptr; #if defined(CT2_WITH_MKL) ptr = ...
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{ std::random_device rd; std::mt19937 eng{rd()}; std::shuffle(this->begin(),this->end(), eng); }template<classT>voidSortvector<T>::vul_omgekeerd() { T waarde{0}; std::for_each(this->rbegin(),this->rend(), [&](T& data) { data = waarde; waarde++; })...
char uuid_str[37]; uuid_unparse_lower(uuid, uuid_str); uuid_clear(uuid); std::string uuid_cxx(uuid_str); return uuid_cxx; } #else std::string getUUID() { return "Ooooops, no UUID for you!"; } #endif 最后,示例hello-world.cpp可执行文件如下: ...
事实几乎如此——二进制文件包含了 CPU 执行的所有代码,但代码分散在多个文件中,方式非常复杂。链接是一个简化事物并使机器代码整洁、易于消费的过程。 快速查看命令列表会让你知道 CMake 并没有提供很多与链接相关的命令。承认,target_link_libraries()是唯一一个实际配置这一步骤的命令。那么为什么要用一整章来...
ext/native/util/random/rng.h ext/native/util/text/utf8.h ext/native/util/text/utf8.cpp ext/native/util/text/parsers.h ext/native/util/text/parsers.cpp ext/native/util/text/wrap_text.h ext/native/util/text/wrap_text.cpp ext/native/util/const_map.h ext/native/ext/jpge/...