When the delegation target is nil and the allow_nil option is not
in use, a Module::DelegationError is raised.
class C
delegate :a, to: :b
def b
nil
end
end
C.new.a
# => Module::DelegationError: C#a delegated to b.a, but b is nil
[ci skip]
Erubi offers the following advantages for Rails:
* Works with ruby's --enable-frozen-string-literal option
* Has 88% smaller memory footprint
* Does no freedom patching (Erubis adds a method to Kernel)
* Has simpler internals (1 file, <150 lines of code)
* Has an open development model (Erubis doesn't have a
public source control repository or bug tracker)
* Is not dead (Erubis hasn't been updated since 2011)
Erubi is a simplified fork of Erubis that contains just the
parts that are generally needed (which includes the parts
that Rails uses). The only intentional difference in
behavior is that it does not include support for <%=== tags
for debug output. That could be added to the ActionView ERB
handler if it is desired.
The Erubis template handler remains in a deprecated state
so that code that accesses it directly does not break. It
can be removed after Rails 5.1.
The exact inspect output of a BigDecimal is out of scope for what we're trying
to communicate about `dup` and `duplicable?` here.
Adding two examples distracts is disctracting, so keep the docs from before
since our minimal version is Ruby 2.2.2.
[ Koichi ITO, Jon Moss, Kasper Timm Hansen ]
This reverts commit 2163874dedaf83e67599c2930c2686caa165fbad, reversing
changes made to 46fdbc5290335ed38fa9fe2b6b0ef8abe4eccb1b.
Closes#27614
Previously when calling `now` on a subclass of e.g. `Time` it would return an instance of `Time` instead of returning an instance of the subclass. This way, we always return the correct class.
ActiveSupport::Duration.parse('P3Y') == 3.years # It should be true
Duration parsing made independent from any moment of time:
Fixed length in seconds is assigned to each duration part during parsing.
Changed duration of months and years in seconds to more accurate and logical:
1. The value of 365.2425 days in Gregorian year is more accurate
as it accounts for every 400th non-leap year.
2. Month's length is bound to year's duration, which makes
sensible comparisons like `12.months == 1.year` to be `true`
and nonsensical ones like `30.days == 1.month` to be `false`.
Calculations on times and dates with durations shouldn't be affected as
duration's numeric value isn't used in calculations, only parts are used.
Methods on `Numeric` like `2.days` now use these predefined durations
to avoid duplicating of duration constants through the codebase and
eliminate creation of intermediate durations.
`Hash#compact` of Ruby native returns new hash.
Therefore, in order to return HWIDA as in the past version, need to
define own `#compact` to HWIDA.
Related: #26868
Ruby 2.4.0 has trouble duplicating certain symbols created from
strings via `to_sym`.
It didn't happen with `'symbol'.to_sym.dup` for some reason, but
works fine with the longer string sample.
Once a newer Ruby version with a fix is released we'll get have
a failing test case we can fix.
Ref: #27532
