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Bug #17814

closed

inconsistent Array.zip behavior

Added by dzwdz (Kuba Prawdziwe-Nazwisko) over 3 years ago. Updated over 3 years ago.

Status:
Closed
Assignee:
-
Target version:
-
ruby -v:
ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x86_64-linux]
Backport:
2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
[ruby-core:103513]

Description

When using Array.zip with an enumerator, it "eats" an additional element off the end of it. Enumerable.zip has the expected behavior of only taking as many elements as it needs to.

I've tested this on local ruby 2.7.2 and ruby 3.0.1 on carc.in.

Files

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test.rb (232 Bytes) test.rb dzwdz (Kuba Prawdziwe-Nazwisko), 04/19/2021 03:00 PM
output.txt (184 Bytes) output.txt dzwdz (Kuba Prawdziwe-Nazwisko), 04/19/2021 03:00 PM
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 #1 [ruby-core:103514]

Updated by dzwdz (Kuba Prawdziwe-Nazwisko) over 3 years ago

note: sorry for the weird Fiber thing in the example code, that's not related to the bug

an enumerator created with

step = 0.step
e = Enumerator.produce { step.next }

would also have the same bug

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 #3

Updated by mame (Yusuke Endoh) over 3 years ago

  • Status changed from Open to Closed

Applied in changeset git|fb04c69418ceee696a114fe31279cf3a5ea16d30.

array.c (rb_ary_zip): take only as many as needed from an Enumerator (#4389)

[Bug #17814]

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