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[FEATURE] seqan3::views::chunk #2975

Merged
merged 17 commits into from
May 31, 2022
Merged

[FEATURE] seqan3::views::chunk #2975

merged 17 commits into from
May 31, 2022

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smehringer
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@smehringer smehringer commented May 9, 2022 •
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Implemetation should work. Doc still has to be done.

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@smehringer smehringer marked this pull request as draft May 9, 2022 05:40
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codecov bot commented May 9, 2022 •
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Codecov Report

Merging #2975 (c1f75ef) into master (7e96df4) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2975      +/-   ##
==========================================
+ Coverage   98.17%   98.19%   +0.01%     
==========================================
  Files         272      273       +1     
  Lines       11991    12119     +128     
==========================================
+ Hits        11772    11900     +128     
  Misses        219      219
Impacted Files Coverage Δ
include/seqan3/utility/views/chunk.hpp 100.00% <100.00%> (ø)
include/seqan3/utility/views/repeat.hpp 100.00% <0.00%> (ø)
include/seqan3/utility/views/single_pass_input.hpp 100.00% <0.00%> (ø)

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@smehringer smehringer marked this pull request as ready for review May 16, 2022 10:29
@smehringer smehringer requested review from a team and MitraDarja and removed request for a team May 16, 2022 10:29
@eseiler eseiler mentioned this pull request May 16, 2022
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eseiler
eseiler reviewed May 16, 2022
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Could you use https://en.cppreference.com/w/cpp/ranges/view_counted for this?
But it's more or less a take_view without bounds checking, and take_view didn't work?

include/seqan3/utility/views/chunk.hpp Outdated Show resolved Hide resolved
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include/seqan3/utility/views/chunk.hpp Outdated
//!\cond
requires (!std::same_as<std::remove_cvref_t<rng_t>, chunk_view>) &&
std::ranges::viewable_range<rng_t> &&
std::constructible_from<urng_t, std::ranges::ref_view<std::remove_reference_t<rng_t>>>
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Suggested change
std::constructible_from<urng_t, std::ranges::ref_view<std::remove_reference_t<rng_t>>>
std::constructible_from<urng_t, std::views::all_t<std::remove_reference_t<rng_t>>

I think?
And you don't really need it for overload resolution anyway?

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This was copied from the kmer_hash view. I thought I don't need it for overload resolution but for checking wether the ctor is valid with the given rng_t

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I see, I wonder why we have that kind of ctor. It's non-standard 😆

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Do we really have a need for this ctor? It kinda seems smelly....

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include/seqan3/utility/views/chunk.hpp
{
private:
//!\brief The iterator type of the underlying range.
using urng_it_t = maybe_const_iterator_t<const_range, urng_t>;
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Suggested change
using urng_it_t = maybe_const_iterator_t<const_range, urng_t>;
using it_t = maybe_const_iterator_t<const_range, urng_t>;

It's kinda what I'd expect of it_t and you call the sentinel sentinel_t, not urng_sentinel_t.

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still open?

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smehringer commented May 16, 2022 •
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Could you use https://en.cppreference.com/w/cpp/ranges/view_counted for this?
But it's more or less a take_view without bounds checking, and take_view didn't work?

Yes it's what the take_view returns anyway and it did not work because

  1. When storing a subrange{rng_begin, rng_end} | std::take(chunk_size) as value type I don't know whether the chunk was completely consumed. Calling begin on this value_type refreshes the take every time so I will consume too much. Caching the iterator on this subrange | take in another subrange was a little hacky and somehow did not work either
  2. Using a counted iterator directly would not work because I need the bound checking for the last chunk.

MitraDarja
MitraDarja previously requested changes May 18, 2022
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LGTM, but add Enrico's suggestions. :)

test/unit/utility/views/chunk_test.cpp Outdated Show resolved Hide resolved
@seqan-actions seqan-actions added lint [INTERNAL] signal for linting and removed lint [INTERNAL] signal for linting labels May 31, 2022
@seqan-actions seqan-actions added lint [INTERNAL] signal for linting and removed lint [INTERNAL] signal for linting labels May 31, 2022
@seqan-actions seqan-actions added lint [INTERNAL] signal for linting and removed lint [INTERNAL] signal for linting labels May 31, 2022
@seqan-actions seqan-actions added lint [INTERNAL] signal for linting and removed lint [INTERNAL] signal for linting labels May 31, 2022
@seqan-actions seqan-actions added lint [INTERNAL] signal for linting and removed lint [INTERNAL] signal for linting labels May 31, 2022
@smehringer smehringer merged commit 385bf6b into seqan:master May 31, 2022
@smehringer smehringer deleted the chunk_view branch October 6, 2022 10:23
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@Irallia Irallia Irallia approved these changes

@eseiler eseiler eseiler approved these changes

@MitraDarja MitraDarja MitraDarja left review comments

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