I'm about to refactor some duplicated code. Two functions both search in a multimap using equal_range(). In a for loop after the call to equal_range() there is a for loop that sets an iterator to equalRange.first with the condition it != equalRange.second. If the correct value is found, the two functions differ. What I would like to do...
Hi, I'm trying to have a (hash-based) Multimap with a (hash-based) Multiset of values for each key. See the example: Multimap<Object, Object> mmap = Multimaps.newMultimap( Maps.<Object, Collection<Object>>newHashMap(), new Supplier<Collection<Object>>() { public Collection<Object> get() { return HashMultiset.create(); ...
In Scala 2.8, I have an immutable map with multiple values for each key: Map[T,Iterable[U]] Is there a superior representation? Secondly, how would you generate such a map from Iterable[(T,U)] ? I am presently using: def toGroupedMap[T,U](vals: Iterable[(T,U)]): Map[T,Iterable[U]] = vals.groupBy(_._1).map({ case (s,it) => (s,it....
I have a Scriptaculous Slider showing in a modal-dialog window above a Multimap. The problem that I'm having is that on this page the slider handle doesn't move if you try to drag it. If I click on the slider track, the handle correctly jumps to that point and you can then use the handle to drag correctly. Clicking on the handle success...
Hello all, I'm having some trouble trying to read in a file that consists of two columns. The first column is a document ID # (int) and the second (separated by whitespace) is the word itself (string). What I'm doing is reading it into a vector, then going through the vector and using even/odd mod, assigning the respective variables thei...
Hi, I am wondering if there is a way to transform a matrix of 2 column into a multimap or list of list. The first column of the matrix is an id (with possibly duplicated entries) and the 2nd column is some value. For example, if I have to following matrix m<-matrix(c(1,2,1,3,2,4), c(3,2)) i would like to transform it into the follo...
following code doesn't work with input: 2 7 add Elly 0888424242 add Elly 0883666666 queryname Elly querynum 0883266642 querynum 0888424242 delnum 0883666666 queryname Elly 3 add Kriss 42 add Elly 42 querynum 42 Why my erase doesn't work? #include<stdio.h> #include<iostream> #include<map> #include <string> using namespace std; void ...
I need a collection that behaves something like C++ multimap, but I also need to be able to get elements by a range of keys. ...
Suppose that I have a multimap (which maps multiple values to a single key), and then I decide that I need to remove all but the first/last/predicate-matching value for all keys. After this operation, I have a traditional map (which maps a single value to a single key). Is there a word that describes this operation? The best I've come...
Hi. I'm working on my C++ assignment about soccer and I encountered a problem with map. My problem that I encountered is that when I stored 2 or more "midfielders" as the key, even the cout data shows different, but when I do a multiplication on the 2nd ->second value, it "adds up" the first ->second value and multiply with it. E.g. J...
As the question states ... i don't get the point about multisets / multimaps. So, what's the purpose? ...
I want to know if anyone who has experience of using both the Google Maps API and the Multimap API can give a good reason as to why one is better than the other - or maybe a list of pros and cons? I will be working on a complete re-development of a site which currently uses the Multimap (Classic) API and want to consider the possibility...
I didn't find such a multimap construction... When i want to do this, I iterate over the map, and populate the multimap. Is there an other way ?? final Map<String, Collection<String>> map = ImmutableMap.<String, Collection<String>>of( "1", Arrays.asList("a", "b", "c", "c")); System.out.println(Multimaps.forMap(map)); final ...
Is it possible for a multimap to contain within it pairs? IE, rather then being defined as multimap<char,int> for instance, it would be defined as multimap<pair, pair>? How would this multimap then be sorted? Also, how would one access the individual contents of each pair? ...
I am trying to adapt a digital electronics problem to a C++ STL based program. Originally I have 4 inputs C1, C2, C3, C4. This means I have a total of 16 combinations: 0000 0001 . . . 1111 I have a multimap defined by typedef std::pair<int, int> au_pair; //vertices typedef std::pair<int, int> acq_pair; //ch qlty typedef std::multim...
I have a multimap defined by typedef std::pair<int, int> comp_buf_pair; //pair<comp_t, dij> typedef std::pair<int, comp_buf_pair> node_buf_pair; typedef std::multimap<int, comp_buf_pair> buf_map; //key=PE, value = pair<comp_t, dij> typedef buf_map::iterator It_buf; int summ (int x, int y) {return x+y;} int total_buf_size = 0; std::c...
I have a multimap defined by typedef std::pair<int, int> au_pair; //vertices typedef std::pair<int, int> acq_pair; //ch qlty specified by C typedef std::multimap<int, acq_pair> au_map; typedef au_map::iterator It_au; The no. of simulations depend on the size of the au_map. For eg: if the au_map.size() = 5 I will have C1, C2, C3, C4, C...
typedef std::pair<int, bool> acq_pair; //edge, channel_quality typedef std::pair<int, acq_pair> ac_pair; typedef std::multimap<int, acq_pair> ac_map; typedef ac_map::iterator It_acq; int bits = acq_map.size(); std::cout << "bits = " << bits << std::endl; std::vector<std::vector<bool> > c_flags (1 << bits); for (i = 0; i < c_flags.siz...
This is utterly mystifying me. I have, in my class declaration, two lines: std::multimap<int, int> commands; std::multimap<std::string, std::string> config; The code compiles without issue, but when I run it, I get the following error: *** glibc detected *** ./antares: free(): invalid pointer: 0xb5ac1b64 *** Seems simple enough, ex...
I initially started out using a std::multimap to store many values with the same key, but then I discovered that it doesn't preserve the insertion order among values with the same key. This answer claims it can be done with boost::multi_index::multi_index_container, but gives no example. Looking through the docs, there are no examples ...