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Update problem 2 TIPS in slice.md
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@ -17,7 +17,7 @@ fn main() {
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let slice = &arr[..2];
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let slice = &arr[..2];
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// TIPS: slice( reference ) IS NOT an array, if it is an array, then `assert!` will passed: each of the two UTF-8 chars '中' and '国' occupies 3 bytes, 2 * 3 = 6
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// TIPS: slice( reference ) IS NOT an array, if it is an array, then `assert!` will passed: each of the two UTF-8 chars '中' and '国' occupies 4 bytes, 2 * 4 = 8
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assert!(std::mem::size_of_val(&slice) == 16);
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assert!(std::mem::size_of_val(&slice) == 16);
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}
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}
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```
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```
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