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Seq.transpose [ RFC FS-1042] #106

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baronfel opened this issue Oct 20, 2016 · 4 comments
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Seq.transpose [ RFC FS-1042] #106

baronfel opened this issue Oct 20, 2016 · 4 comments
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approved-in-principle area: library
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F# 4.5

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@baronfel
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baronfel commented Oct 20, 2016 •
edited by dsyme
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Submitted by James Ashwell on 5/3/2016 12:00:00 AM
14 votes on UserVoice prior to migration

It would be nice to have a function that transposes sequences:

[ [ 00; 01; 02;... ]; [ 10; 11; 12;... ]; [ 20; 21; 22;... ];... ]

to

[ [ 00; 10; 20;... ]; [ 01; 11; 21;... ]; [02; 12; 22;... ];... ]

This is particularly useful when dealing with infinite x infinite sequences, where you want to iterate over the 'outer group' first.

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@dsyme dsyme added area: library and removed open labels Oct 29, 2016
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dsyme commented Mar 1, 2017

Marking as approved in principle

@dsyme dsyme mentioned this issue Nov 16, 2017
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@PatrickMcDonald
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PR Created: dotnet/fsharp#4020

@dsyme dsyme added the needs rfc label Dec 1, 2017
@dsyme dsyme changed the title Seq.transpose Seq.transpose [ RFC FS-1042] Dec 1, 2017
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dsyme commented Dec 1, 2017

RFC: RFC: https://github.com/fsharp/fslang-design/blob/master/RFCs/FS-1042-add-seq-transpose.md

@dsyme dsyme removed the needs rfc label Dec 1, 2017
@PatrickMcDonald
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This one is complete and can be closed

@cartermp cartermp closed this as completed Oct 6, 2018
@cartermp cartermp modified the milestones: F# 4.1, F# 4.5 Jan 21, 2019
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