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Extend HashMap to add putChildren method


Extend HashMap to add putChildren method

By : Shivam Garg
Date : November 20 2020, 07:00 PM
wish of those help I have question, I want to develop a programme about extend the hashmap to add putchildren method.. I wrote main class, but now I want to write putChildrenValue method.. My question is : I need to implement a putChildrenValue method with 3 parameters, String key, String key, ObjectValue. It will store the system as described above accordingly. , It could go like this:
code :


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How to extend a javascript object to include a method using _.extend or $.extend?

How to extend a javascript object to include a method using _.extend or $.extend?


By : Uwe Æme Van
Date : March 29 2020, 07:55 AM
Any of those help For example using Underscore library, the following code works: , Remove the extra );
code :
var myobject = {};
_.extend(myobject, { 
  method: function() {
    return 'demo'
  } // ); <-- remove this
});
Extend HashMap and LinkedHashMap at the Same Time?

Extend HashMap and LinkedHashMap at the Same Time?


By : Shells
Date : March 29 2020, 07:55 AM
I wish this help you Let your custom map implement the Map interface instead and wrap a concrete map with it that is provided by the user of the class via the constructor:
code :
public class MyMap implements Map<String, Double>{
    private final Map<String, Double> map;  

    public MyMap(Map<String, Double> map){
        this.map = map;
    }

    public void putIfGreaterThan(String key, Double value ){...}

    @Override
    public int size() {
        return map.size();
    }

    //inherited methods
}
MyMap map = new MyMap(new LinkedHashMap<>());
MyMap map = new MyMap(new HashMap<>());
How to extend a Vec<String> as HashMap value?

How to extend a Vec<String> as HashMap value?


By : user7084032
Date : March 29 2020, 07:55 AM
I wish did fix the issue. I have a HashMap>. I cannot figure out how to update the value by growing the Vec. I thought the following would work: , Use this code:
code :
use std::collections::hash_map::Entry;

match data.entry(department.to_string()) {
    Entry::Occupied(mut entry)  => { entry.get_mut().push(employee.to_string()); },
    Entry::Vacant(entry)        => { entry.insert(vec!(employee.to_string())); },
}
Is Java method with a single argument to receive values of both HashMap<String, Integer> and HashMap<Long, Inte

Is Java method with a single argument to receive values of both HashMap<String, Integer> and HashMap<Long, Inte


By : Ecc
Date : March 29 2020, 07:55 AM
I hope this helps you . You can introduce a T which needs to implement Comparable and then replace any usage of Long with T:
code :
static <T extends Comparable<T>> LinkedHashMap<T, Integer> sortNumberHashMapByKey(HashMap<T, Integer> map){
    ArrayList<T> keys = new ArrayList<>(map.keySet());
    ArrayList<Integer> values = new ArrayList<>(map.values());
    Collections.sort(keys);
    Collections.sort(values);
    LinkedHashMap<T, Integer> sortedMap = new LinkedHashMap<>();

    for (Integer value : values) {
        Iterator<T> keyIt = keys.iterator();
        while (keyIt.hasNext()){
            T key = keyIt.next();
            if (map.get(key).equals(value)){
                keyIt.remove();
                sortedMap.put(key, value);
                break;
            }
        }
    }
    return sortedMap;
}
Extend HashMap to get all objects with the specified hashcode?

Extend HashMap to get all objects with the specified hashcode?


By : Aymeric
Date : March 29 2020, 07:55 AM
I hope this helps you . HashMap does not expose any way to do this, but I think you're misunderstanding how HashMap works in the first place.
The first thing you need to know is that if every single object had exactly the same hash code, HashMap would still work. It would never "mix up" keys. If you call get(key), it will only return the value associated with key.
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