Search DaniWeb - std::map

Re: how to create a simple elevator simulation? 13 Hours Ago by trueframe To make a basic elevator simulation, first, identify the floors and the elevator's capacity. Then, use loops and conditionals in programming to mimic its movement. Include buttons for users to call the elevator and select floors. Test thoroughly for accuracy. Mariadb10.11.6 Glarea single failed node startup stuck failure 2 Weeks Ago by mx_983 …-03 5:05:11 2 [Note] WSREP: Resetting GCache seqno map due to different histories. 2024-04-03 5:05:11… Re: Improve HAVING BY performance 2 Weeks Ago by toneewa …stmt = con->createStatement(); auto start_time0 = std::chrono::high_resolution_clock::now(); // SQL query stmt->…<< endl; } auto end_time1 = std::chrono::high_resolution_clock::now(); std::chrono::duration<double> elapsed_seconds1 = end_time1 … Re: Travel without Technology is like __________ without _____________. 4 Weeks Ago by Dani According to ChatGPT, travel without technology is like exploring without a map, a mime without invisible walls, a penguin without ice skates, and a fish without fins. To be perfectly honest, I don't get any of them except for maybe the first. Re: Mariadb10.11.6 Glarea single failed node startup stuck failure 2 Weeks Ago by rproffitt From https://stackoverflow.com/questions/78269177/mariadb10-11-6-galera-single-failed-node-startup-stuck-failure where they call it out as a bug waiting for a fix. Re: Mariadb10.11.6 Glarea single failed node startup stuck failure 2 Weeks Ago by rproffitt The problem is still unresolved. Until the bug is fixed. Be sure to tell all that you don't accept this as a bug and want a fix now. Re: Mariadb10.11.6 Glarea single failed node startup stuck failure 2 Weeks Ago by rproffitt I wonder if the last other stable releases show this issue? "Stable release: 11.3.2 / 16 February 2024; 46 days ago" or the most recent release of MariaDB 10.11: MariaDB 10.11.7 Stable (GA) That is, many fixes don't get released for out of date versions. The new version is how many fixes are issued. Re: Mariadb10.11.6 Glarea single failed node startup stuck failure 2 Weeks Ago by toneewa I wonder how these IP addresses are issued. Static, dynamic, or is DHCP on? It reminds me of the time a network printer that stopped working, after the power went out. Other devices connected to the network after it's setup. Then, after rebooting, it got a different IP, but the host still thought it was on the old one. I've seen the same thing when… Re: Extracting values from capturing groups in regex 2 Months Ago by Tom_45 …="http://www.ssa.gov/sitemap.htm">Site Map</a></td> </tr> <… Re: C++ programming error 2 Months Ago by rproffitt …/language/escape Example follows: #include <iostream> using namespace std; int main() { cout << "furey, edward \"sphere… Re: Fine-Tuning OpenAI Whisper Model for Audio Classification in PyTorch 2 Months Ago by habi_2 how to use the best_model.pt Re: Sort std::map of object pointers 11 Years Ago by ravenous `std::map` can take a *comparator* as one of its template … just need to pass this comparator to the map when you define it: std::map< const date*, bool, pointer_comparator< const…T y ) const { return *x < *y; } }; int main() { typedef std::map< const int*, bool, pointer_comparator< const int* > >… Re: stl questions 14 Years Ago by Benbenzhu …gt; what is the difference between pair() and make_pair() The `std::map<Key, Value>::value_type` is just a typedef to…the form: template <typename T, typename U> std::pair<T, U> make_pair(const T& …first, const T& second) { return std::pair<T, U>(first, second); } When you need… Re: sorting problem 13 Years Ago by Unimportant std::map<std::string,dvd> car_info; std::map will sort this array automatically based on the < operator for std::string std::map["volvo"] = dvd(constructor values); // or whatever temporary dvd you make Re: Splitting a string word by word 13 Years Ago by Andreas5 Map is a kind of hashtable isnt it? Anyway I wanted …;iostream> #include <fstream> int main() { using namespace std; map<string, int> m; string s = "Hello my… == ' ') first++; string a(first, last); ++m[a]; first = last; } } for(map<string, int>::const_iterator it = m.begin(); it != m… Re: trying to get the second 2nd value of same key in multimap 17 Years Ago by WolfPack std::map doesnt allow duplicate keys. Another easy way to implement the … Re: trying to get the second 2nd value of same key in multimap 17 Years Ago by iamthwee >std::map doesnt allow duplicate keys. True, my bad. std::map help!! 10 Years Ago by glenwill101 …: error: conversion from ‘std::map<std::basic_string<char>, Object*>::iterator {aka std::_Rb_tree_iterator<std::pair<const std::basic_string<char… non-scalar type ‘std::map<std::basic_string<char>, Object>::iterator {aka std::_Rb_tree_iterator<std::pair<const std::basic_string<char… Re: std::map help!! 10 Years Ago by Moschops You're trying to make an iterator that deals with maps like this: `std::map<string, Object>` but your actual map looks like this:`std::map<string, Object*>` As an aside, one of the very useful things brought to us by C++11 is the auto keyword allowing you to make iterators something like this: `auto itr=_c.begin();` Re: std::map help!! 10 Years Ago by mike_2000_17 You just forgot the `*` next to the type `Object` in your for-loop. It should be: for( std::map<string, Object* >::iterator itr=_c.begin(); itr < _c.end(); itr++) std::map 15 Years Ago by Jennifer84 I have declared a map like below. What I have some problem with is how … sure I have understand how the mapping works here. [code] std::map<std::string, double> numb; void Test() { double Number1 = 0… Sort std::map of object pointers 11 Years Ago by SCass2010 … if anyone could help... I know the std::map automatically sorts it values - I have a map a Date object pointer, and a… my own function to do it (by iterating through the map and attempting to put them in order to a new… map) but the order comes out the same. Any help would … std::map with char* 14 Years Ago by monkey_king …; \t"); } return asso; } void cleanup(std::map<const char*,int,cmp_str> &asso){ std::map<const char*,int,cmp_str>…(asso.begin(),asso.end()); } int main(int argc, char** argv){ std::map <const char*, int,cmp_str> asso = build(); printMap(asso… Re: std::map insert crashes 12 Years Ago by vijayan121 … While I'm inserting such entity in a std::map the code fails and makes the program crash. …have anything to do with inserting into a [B]std::map<>[/B] per se. a. in [… static int id = 100 ; return id += 7 ; } } ; std::map< int, BaseEntity* > map ; void test_insert( BaseEntity* p ) { int id = p->… Re: std::map with char* 14 Years Ago by ArkM It's so easy: [code=cplusplus] typedef std::map<const char*,int,cmp_str> Map; void cleanup(Map& m) { for (Map::iterator i = m.begin(); i != m.end(); i++) free(const_cast<char*>(i->first)); m.clear(); } [/code] Be careful: this map must have keys allocated by C-functions strdup or malloc. Re: std::map with char* 14 Years Ago by monkey_king Thanks for your response. Is the const_cast necessary because i definded my map as a [CODE=c] typedef std::map <const char*,int> aMap; [/CODE] instead of [CODE=c] typedef std::map <char*,int> aMap; [/CODE] Having a key as const in a map is to prefere right? thanks again Re: std::map with char* 14 Years Ago by ArkM … 2. Allocate large buffer fo process file (use std::filebuf and putsetbuf member to assign large preallocated buffer)… are too small for bulk file processing. 3. std::map (intrusive) container is a good thing but optimized …usually are much more faster (that's proved ;))... std::string is not a bottleneck, see points above (acceleration… Re: std::map with char* 14 Years Ago by ArkM … good freeware implementations in C and C++ (search Goodle). Think: std::map with char* key is not too slow. Memory: 35 millions…'s all. String buffer: you allocates much more memory for std::map; 35 millions of malloc/new - too expensive if you see… std::map insert crashes 12 Years Ago by Dman01 …entitymanager, though I just copied it. He used std::map to collect all entities as pointers which are …. While I'm inserting such entity in a std::map the code fails and makes the program crash.…0.0)); } [/CODE] Whats not working : [CODE]typedef std::map<int, BaseGameEntity*> EntityMap; EntityMap m_EntityMap; //... void … std::map and std::pair template problem 14 Years Ago by Kob0724 …gt; class RangeValidatorDependency : public Dependency{ public: typedef std::map<std::pair<S,S>, Teuchos::RCP<…const Teuchos::ParameterEntryValidator> > RangeToValidatorMap; RangeValidatorDependency(std::string dependent, std::string dependee, RangeToValidatorMap rangesAndValidators, Teuchos::RCP<…