# Introduction In the previous section, we discussed arrays in Go. However, arrays have limitations: once declared and initialized, their length cannot be changed. Therefore, arrays are not widely used in daily programming. In contrast, slices are more commonly used and provide a more flexible data structure. **Knowledge Points:** - Define a slice - Initialize a slice - Operations on slices, i.e., add, delete, modify, and search - Expand a slice - Slice truncation - Multi-dimensional slices
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