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NOTES.md 540B
NOTES.md 540B
Lessons from Stack 1
When you need to do the ol’ switcheroo with some memory mem::replace comes in useful.
Lessons from Stack 2
take() is handy, read more about this. Sometimes you just have to get your hands dirty and do some lifetimes, just a fact of life, get used to it son. Revise some of these impl types, to understand better how they function with std library collections.
Lessons from Persistent Stack
and_then() allows you to map over a value returning an option. Useful for when the type mapping is an option.