[GitHub] [arrow] WilliamWhispell commented on a change in pull request #10106: ARROW-5640: [Go] Implement Arrow Map Array

[GitBox]

WilliamWhispell commented on a change in pull request #10106:
URL: https://github.com/apache/arrow/pull/10106#discussion_r616707015



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File path: go/arrow/array/builder.go
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@@ -277,6 +277,8 @@ func NewBuilder(mem memory.Allocator, dtype arrow.DataType) 
Builder {
        case arrow.UNION:
        case arrow.DICTIONARY:
        case arrow.MAP:
+               typ := dtype.(*arrow.MapType)

Review comment:
       ahh thanks




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