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rails--rails/activemodel/test
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Ryuta Kamizono 0adcec4954 PERF: Avoid extra delegation to LazyAttributeHash 
The extra delegation to `LazyAttributeHash` has non-negligible overhead.

Avoiding that delegation makes attributes access about 45% faster for
readonly (non-mutation) usage.

https://gist.github.com/kamipo/4002c96a02859d8fe6503e26d7be4ad8

Before:

```
IPS
Warming up --------------------------------------
    attribute access     1.000  i/100ms
Calculating -------------------------------------
    attribute access      3.444  (± 0.0%) i/s -     18.000  in   5.259030s
MEMORY
Calculating -------------------------------------
    attribute access    38.902M memsize (     0.000  retained)
                       350.044k objects (     0.000  retained)
                        15.000  strings (     0.000  retained)
```

After (with `immutable_strings_by_default = true`):

```
IPS
Warming up --------------------------------------
    attribute access     1.000  i/100ms
Calculating -------------------------------------
    attribute access      5.066  (±19.7%) i/s -     25.000  in   5.024650s
MEMORY
Calculating -------------------------------------
    attribute access    27.382M memsize (     0.000  retained)
                       160.044k objects (     0.000  retained)
                        15.000  strings (     0.000  retained)
```
2020-06-15 09:26:24 +09:00
..
cases PERF: Avoid extra delegation to LazyAttributeHash 2020-06-15 09:26:24 +09:00
models Merge pull request #32313 from lulalala/model_error_as_object 2019-04-24 16:16:00 -04:00
validators Revert "Merge pull request #37504 from utilum/no_implicit_conversion_of_nil" 2019-12-09 11:50:39 -03:00