| Commit message (Collapse) | Author | Age | Files | Lines |
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- Fix a few deprecation warnings
- Remove testing of `Hash#slice`
- Imporve test of `Hash#slice!`
- Remove mention about `Hash#slice` from the guide
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Skipping over 2.4.0 to sidestep the `"symbol_from_string".to_sym.dup` bug.
References #32028
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This reverts commit 3420a14590c0e6915d8b6c242887f74adb4120f9, reversing
changes made to afb66a5a598ce4ac74ad84b125a5abf046dcf5aa.
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The methods Hash#transform_values and Hash#transform_values! have been
implemented in Ruby and they'll be available as part of the standard
library.
Here's the link to the discussion in Ruby's issue tracker:
https://bugs.ruby-lang.org/issues/12512
These methods are implemented in C so they're expected to perform
better.
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Updated docs for transform_keys & transform_values
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We're calling this function on an empty hash as part of copying the
attribute set during dirty checking initialization. The new structure
caused a performance regression on loading records from the database.
This causes `User.all.to_a` to perform about 10% faster w/ 10k records.
Calculating -------------------------------------
User.all - master 9.000 i/100ms
User.all - sg-fix-ar-regression
8.000 i/100ms
-------------------------------------------------
User.all - master 81.236 (± 7.4%) i/s - 405.000
User.all - sg-fix-ar-regression
89.716 (± 7.8%) i/s - 448.000
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Didn't get a chance to convert existing code, I'll skim through the code
base to make use of this later this afternoon.
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