The world has quietly become far more open to the idea of holding two - or even more - passports at once. Approximately 150 countries allow dual citizenship in some form, though the rules vary sharply ...
The sample code in your question is clearly trying to count the number of occurrences of each character: if it already has a count for a given character, get returns it (so it's just incremented by one), else get returns 0 (so the incrementing correctly gives 1 at a character's first occurrence in the string).
As you have found, get just gets the value corresponding to a given key. sorted will iterate through the iterable it's passed. In this case that iterable is a dict, and iterating through a dict just iterates through its keys. If you want to sort based on the values instead, you need to transform the keys to their corresponding values, and of course the obvious way to do this is with get. To ...
The get/set pattern provides a structure that allows logic to be added during the setting ('set') or retrieval ('get') of a property instance of an instantiated class, which can be useful when some instantiation logic is required for the property.
What is the { get; set; } syntax in C#? - Stack Overflow
11 Here is my solution. As advised by Andy E while answering this question, it's not good for your script's performance if it's repeatedly building various regex strings, running loops etc just to get a single value. So, I've come up with a simpler script that returns all the GET parameters in a single object.