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Add deprecated ind2sub(::NTuple{N,Integer}, ::CartesianIndex{N}) #23708

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merged 1 commit into from
Sep 22, 2017

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@martinholters martinholters commented Sep 14, 2017

Makes the return type change of #22907 less breaking by allowing the
common pattern ind2sub(size(a), indmax(a)) to still work, ref #22907 (comment) in particular.

Directly introducing a new method as deprecated is a bit strange, but IMHO this might still make sense.

# ease transition for return type change of e.g. indmax due to PR #22907 when used in the
# common pattern `ind2sub(size(a), indmax(a))`
@deprecate(ind2sub(dims::NTuple{N,Integer}, idx::CartesianIndex{N}) where N,
ntuple(n -> idx[n], Val{N}()))
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Isn't this just idx.I?

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@martinholters martinholters Sep 15, 2017

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Yes, but I felt a bit uneasy advertising direct access to an internal field in the deprecation message.

EDIT: With #23719, it could just be Tuple(idx), which would also be quite nice.

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I like Tuple(idx) even if CartesianIndex objects aren't iterable.

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Changed to Tuple(idx).

Makes the return type change of #22907 less breaking by allowing the
common pattern `ind2sub(size(a), indmax(a))` to still work.
@martinholters martinholters changed the title RFC: Add deprecated ind2sub(::NTuple{N,Integer}, ::CartesianIndex{N}) Add deprecated ind2sub(::NTuple{N,Integer}, ::CartesianIndex{N}) Sep 21, 2017
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	From worker 4:	signal (11): Segmentation fault
	From worker 4:	in expression starting at /tmp/julia/share/julia/test/vecelement.jl:60
	From worker 4:	Type at /tmp/julia/share/julia/test/vecelement.jl:49

Likely unrelated, but has this been seen before?

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mbauman commented Sep 22, 2017

Yeah, that's #23796. This should definitely help the transition, thanks!

@mbauman mbauman merged commit 942b843 into master Sep 22, 2017
@mbauman mbauman deleted the mh/ind2sub_for_22907 branch September 22, 2017 15:08
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3 participants