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I have a Dictionary data type. My question is, is Dictionary.Keys.ToList()[i] always correspond to Dictionary.Values.ToList()[i] ? That is, will the following test always passes
public void DictionaryTest(int i, Dictionary<U,T> dict)
{
var key = dict.Keys.ToList()[i];
Assert.AreEqual(dict[key], dict.Values.ToList()[i]);
}
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To get the list of dictionary values from the list of keys, use the list comprehension statement [d[key] for key in keys] that iterates over each key in the list of keys and puts the associated value d[key] into the newly-created list.
In Python to get all key-values pair from the dictionary, we can easily use the method dict. items(). This method helps the user to extract all keys and values from the dictionary and iterate the object with a for loop method.
The values of a dictionary can be of any type, but the keys must be of an immutable data type such as strings, numbers, or tuples.
I would say yes based on this from MSDN:
The order of the values in the Dictionary.ValueCollection is unspecified, but it is the same order as the associated keys in the Dictionary.KeyCollection returned by the Keys property.
129
Checking the MSDN entry for Dictionary.Keys Property:
The order of the keys in the Dictionary.KeyCollection is unspecified, but it is the same order as the associated values in the Dictionary.ValueCollection returned by the Values property.
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