Question content
I have a use case where the built-in len() function is not suitable for checking if the initialized (non-zero) slice is empty.
How to safely check if a slice is empty without len()?
I try to index the first element, however, if it doesn't exist, my program panics.
Workaround
There is absolutely no reason not to use len()
, so just use len since len is an O(1) operation .
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