stephenrawls commented on issue #14062: Bug in Hybridize w/ Concat URL: https://github.com/apache/incubator-mxnet/issues/14062#issuecomment-461298379 I see, thanks. Basically what I *wanted* to do is this: `begin=(0,0,0), end=(size_of_dim1,1,size_of_dim2)` but since this is symbolic mode I can't use use the size directly, and -1 will make my size too short by 1. I happened to notice behavior of ndarray was to take the full axis when both begin & end were 0, and I guess I tricked myself into thinking that was intentional behavior by ndarray, as opposed to the undefined behavior it apparently is. In this case I think I can use `slice_axis(axis=1,begin=0,end=1)` to get what I want. In general, it would be nice if dynamic shapes were supported and I didn't have to find "tricks" to get an array of the right shape. But this works for now. Thanks again!
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