count_if(ExecutionPolicy&&policy, ForwardIt first, ForwardIt last, UnaryPred p); (4)(C++17 起) 返回范围[first,last)中满足特定判别标准的元素数。 1)计数等于value的元素(使用operator==)。 3)计数谓词p对其返回true的元素。 2,4)同(1,3),但按照policy执行。
=m.end())returnit->second.size();if(charbuf[10];std::fgets(buf,10,stdin))m[0]+=buf;if(std::lock_guardlock(mx);shared_flag){unsafe_ping();shared_flag=false;}if(ints;intcount=ReadBytesWithSignal(&s)){publish(count);raise(s);}if(constautokeywords={"if","for","while"};std...
all_ofany_ofnone_of countcount_if findfind_iffind_if_not find_end find_first_of adjacent_find search search_n mismatch equal for_each lexicographical_compare Modifying sequence operations copycopy_if copy_n copy_backward move move_backward fill fill_n generate generate_n swap_ranges shuffle...
count( ExecutionPolicy&& policy, InputIt first, InputIt last, const T &value ); std::count template< class ExecutionPolicy, class InputIt, class UnaryPred > typename iterator_traits<InputIt>::difference_type count_if( ExecutionPolicy&& policy, InputIt first, InputIt last, UnaryPred p );...
() 设置区域信息 std::locale loc("C"); reg.imbue(loc); // 使用 mark_count() 获取正则表达式中标记的子表达式数量 std::cout << "Mark count: " << reg.mark_count() << std::endl; // 使用 flags() 获取语法标志 std::cout << "Flags: " << reg.flags() << std::endl; return 0...
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get(); }); // Wait up to 1 second for the count to become zero up auto status = latch->wait_for(std::chrono::seconds(1)).get(); if (status == std::cv_status::no_timeout) { std::cout << "latch is count down\n"; }...
The output max member count. Return value Type: HRESULT S_OK if the call succeeded or an error code otherwise. The human-readable form of the result can be retrieved via PFMultiplayerGetErrorMessage(). Remarks If this lobby object was created by calling PFMultipla...
Number of objects written successfully, which may be less thancountif an error occurred. WennsizeodercountNull ist, gibtfwriteNull und führt keine weitere Aktion . Original: Ifsizeorcountis zero,fwritereturns zero and performs no other action. ...
Constructs the string with a substring[pos, pos+count)ofother. If the requested substring lasts past the end of the string, or ifcount==npos, the resulting substring is[pos, size()). Ifpos>=other.size(),std::out_of_rangeis thrown. ...