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21 lines
555 B
Go
21 lines
555 B
Go
// Package sliceutil provides generic slice helpers.
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package sliceutil
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// Move moves the element at oldIndex to newIndex in the slice.
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// Only elements in-between are shifted.
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func Move[T any](slice []T, oldIndex, newIndex int) {
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if oldIndex == newIndex || oldIndex < 0 || oldIndex >= len(slice) || newIndex < 0 || newIndex >= len(slice) {
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return
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}
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elem := slice[oldIndex]
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if oldIndex < newIndex {
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copy(slice[oldIndex:], slice[oldIndex+1:newIndex+1])
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} else {
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copy(slice[newIndex+1:], slice[newIndex:oldIndex])
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}
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slice[newIndex] = elem
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}
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