16 lines
517 B
Markdown
16 lines
517 B
Markdown
# Hints
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+ `millions` slice's backing array uses 65 MB of memory.
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+ `make` a new slice with 10 elements with a new backing array.
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+ `copy` the last 10 elements of the `millions` slice to the new slice.
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+ So you will have slice with a new backing array only with 10 elements.
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+ Then overwrite the `millions` slice by simply `assigning` `last10` slice to it.
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+ **Remember:** slice ~= pointer to a backing array.
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If you overwrite the slice, it will lose that
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pointer. So Go can collect the unused memory. |