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# SD
Very efficient flash cards app using Go and SQLite
## Performance
SD is designed to be extremely efficient in order to support a very large number of flash cards and should be able to handle several billion cards with ease. If `N` is the number of cards, initializing the program requires `O(N)` time and `O(N)` memory. Selecting a random card and adjusting its weight based on if the user got it correct requires `O(log N)` time.
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