Dictionary is a object that can store values in Key-Value pair. its just like a list, the only difference is: List can be iterate using index(0-n) but not the Dictionary . Generally when we try to iterate the dictionary we get below error: " Collection was modified; enumeration operation may not execute. " So How to parse a dictionary and modify its values?? To iterate dictionary we must loop through it's keys or key - value pair. Using keys
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