C++ using std::set remove duplicate item for a struct fail.

Content Index :

C++ using std::set remove duplicate item for a struct fail.
Linq to XML: Remove duplicate from an item
BOOLEAN allocate_items(struct item * items, size_t howmany) function for allocate an array of struct item
Remove Item from Struct (Swift)
How to remove duplicate item in Dart
Remove duplicate structs in array based on struct property in Swift

C++ using std::set remove duplicate item for a struct fail.

Tag : cpp , By : ezzze

Date : November 24 2020, 05:44 AM

wish help you to fix your issue std::set detects duplicates by means of the trichotomy law, which states that if !cmp(a, b) && !cmp(b, a) then eq(a, b), for some order relation cmp and some equivalence relation eq. If you want eq to stand for equal, you need to provide a order relation cmp that models a strict total ordering between TokenTerms. One such ordering is the lexicographical order, which can be readily achieved by way of std::tie. Here's a complete example:

#include <set>
#include <tuple>
#include <string>
#include <iostream>

typedef unsigned int uint32_t;

struct TokenTerm {
    std::string     value;
    std::string     type;
    uint32_t        start_pos;
    uint32_t        end_pos;
};

struct TokenTermCmp {
    bool operator()(TokenTerm const& x, TokenTerm const& y) const {
        return std::tie(x.value, x.type, x.start_pos, x.end_pos) < std::tie(y.value, y.type, y.start_pos, y.end_pos);
    }
};

int main() {
    std::set<TokenTerm, TokenTermCmp> tokens;
    tokens.insert({"value", "type", 0, 10});
    tokens.insert({"value", "type", 0, 10});

    for (auto&& token: tokens) 
        std::cout << token.value << ", "
                  << token.type << ", "
                  << token.start_pos << ", "         
                  << token.end_pos
                  << '\n';
}

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C++ using std::set remove duplicate item for a struct fail. , Remove duplicate structs in array based on struct property in Swift , Remove Item from Struct (Swift) , BOOLEAN allocate_items(struct item * items , size_t howmany) function for allocate an array of struct item , remove duplicate in sql ,

Linq to XML: Remove duplicate from an item

Tag : chash , By : jay

Date : March 29 2020, 07:55 AM

To fix the issue you can do I have an xml file containing things like these:

var contents = XDocument.Parse(xml);

// Select only elements that have the language attribute
var result = from item in contents.Descendants()
             where item.Attribute("language") != null
             select item;

// Returns only those elements that have at least another element
// with the same value.
var resultDuplicates = result
    .GroupBy(s => s.Value)
    .SelectMany(grp => grp.Skip(1));

// If duplicates found, replace them in the original xml.
if (resultDuplicates.Count() > 0)
{
    foreach(var entry in resultDuplicates)
        xml = xml.Replace(entry.ToString(), string.Empty);
}

BOOLEAN allocate_items(struct item * items, size_t howmany) function for allocate an array of struct item

Tag : c , By : DotNetWise

Date : March 29 2020, 07:55 AM

around this issue First of all, both line 4 and 6, as you mentioned seems to be OK.
That said, the basic problem with this function is, you're allocating memory to a local scope of variable. This way

Remove Item from Struct (Swift)

Tag : ios , By : ERaubenheimer

Date : March 29 2020, 07:55 AM

I hope this helps you . Find the index of object and remove it, which matches your song title and artist

let index = favoriteSongs.index{ $0.title == songs[thisSong].title && $0.artist == songs[thisSong].artist}
if let index = index {
    favoriteSongs.remove(at: index)
}

How to remove duplicate item in Dart

Tag : dart , By : DonMac

Date : March 29 2020, 07:55 AM

To fix this issue So here is how i set my data

tempNotification.toSet().toList()

class Notification {
  final String notificationId;
  ...
  bool operator ==(o) => o is Notification && notificationId == o.notificationId;
  int get hashCode => notificationId.hashCode;
}