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simplify conversions from slice to array (#5818)
Go 1.17 introduced an expression for convertion from slice to array, so codes can be simplified. Ref: https://tip.golang.org/ref/spec#Conversions_from_slice_to_array_or_array_pointer > Converting a slice to an array yields an array containing the elements of the underlying array of the slice.
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@ -347,45 +347,25 @@ func computeDistinct(kvs []KeyValue) Distinct {
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func computeDistinctFixed(kvs []KeyValue) interface{} {
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switch len(kvs) {
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case 1:
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ptr := new([1]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [1]KeyValue(kvs)
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case 2:
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ptr := new([2]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [2]KeyValue(kvs)
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case 3:
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ptr := new([3]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [3]KeyValue(kvs)
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case 4:
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ptr := new([4]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [4]KeyValue(kvs)
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case 5:
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ptr := new([5]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [5]KeyValue(kvs)
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case 6:
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ptr := new([6]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [6]KeyValue(kvs)
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case 7:
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ptr := new([7]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [7]KeyValue(kvs)
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case 8:
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ptr := new([8]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [8]KeyValue(kvs)
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case 9:
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ptr := new([9]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [9]KeyValue(kvs)
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case 10:
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ptr := new([10]KeyValue)
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copy((*ptr)[:], kvs)
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return *ptr
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return [10]KeyValue(kvs)
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default:
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return nil
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}
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