Here, recover_key takes dictionary and value to find in dictionary. We then loop over the keys in dictionary and make a comparison with that of value and return that particular key.
Conclusion: Clearly having a dictionary of dicts is the most efficient way to be able to search in those cases, where you know say you will be searching by id's only. interestingly using filter is the slowest solution.
Values.ToList () converts your dictionary values into a List of objects. IndexOf ("one") searches your new List looking for "one" and returns the Index which would match the index of the Key/Value pair in the dictionary. This method does not care about the dictionary keys, it simply returns the index of the value that you are looking for.
I have an application that use managed dlls. One of those dlls return a generic dictionary: Dictionary<string, int> MyDictionary; The dictionary contains keys with upper and lower case. ...
I am trying to confirm whether a specific dictionary key contains a value e.g. does dict01 contain the phrase "testing" in the "tester" key At the moment I am having to iterate through the dicti...
When you call the Contains method, Dictionary does an internal search to find its index. If it returns true, you need another index search to get the actual value. When you use TryGetValue, it searches only once for the index and if found, it assigns the value to your variable. Edit: Ok, I understand your confusion so let me elaborate: Case 1:
The longer your list, the longer it takes to search for a given key. Contrast this to data_dict[keyStr]. This performs a hash lookup, which is an O (1) operation. It doesn't (directly) depend on the number of keys in the dictionary; even as you add more keys, the time to check if a given key is in the dictionary stays constant.
objDict = { id1 : { name: 'someObj1', id: 'someId1' }, id2 : { name: 'someObj2', id: 'someId2' }, id3 : { name: 'someObj3', id: 'someId3' }, } If I wanted to search for the property "someId2" of the "id" property in Values of that dictionary.. how would I be able to grab the the whole object after finding it? I really can't think of a good way to do it outside of iterating the dictionary with ...
