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by amscanne
2124 days ago
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> The zero-length optimization probably doesn't exist for arrays in this context This is no distinction for arrays for non-array. E.g. [0]int is a valid type, and it's size is zero. It is treated exactly the same as all other zero-sized types. This is not a special optimization: there are may cases of zero-sized types. The slice itself is a value type. So foo := []int{} would occupy 24-bytes (data pointer, len, cap) and not necessarily escape to the heap, exactly the same as var foo []string. |
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