Considering the Language:
The
Cool
class appears, an ancestor for all classes that are willing to convert their values in order to support the "culturally universal" methods defined in Cool
(for example .abs
or .substr
). The mutable Cool
namespace will also contain the multi methods of last resort that are searched if normal multiple dispatch does not find a viable candidate. All built-in classes except junctions and Whatever
derive from Cool
. User-defined classes do not derive from Cool
by default.The verbs for leaving a
when
block early will be proceed
and succeed
(instead of the false friends continue
and break
). proceed
resumes execution after the closing curly of the when
block. succeed
immediately leaves the surrounding topicalizer block.The loose prefix operator for testing truth has been renamed from
true
to so
in order to make it more distinct from True
and shorter than not
.The
REJECTS
method has been removed. The negated smart match operator !~~
will use !foo.ACCEPTS
instead.Picking from baggy containers has been refined. A separate
.grab
method will do a mutating .pick
which removes the selected element (once) from the container. When used without replacement, .pick
will keep a private temporary copy of the Bag
and .grab
from that. The .pickpairs
and .grabpairs
methods will treat each key/replication count pair as a single item to pick (and remove).♢
Considering Rakudo:
Shortly after Parrot's 1.9.0 release, the Rakudo master branch was released as development release #24 ("Seoul"). Due to spectest changes, this release passes fewer tests than #23, but the relative percentage of passed tests has increased. The most visible changes in #24 are the switch from
Object
to Mu
and the removal of undef
.In the
ng
branch, Jonathan Worthington reimplemented does
in terms of the meta-model, not relying on Parrot's primitives. Work continued to make more spectest pass with the ng
branch.♢
Considering Parrot:
Gerd Pokorra released Parrot 1.9.0 "Blue-fronted Amazon" on December 15. Among the most notable changes are the greatly improved nqp-rx compiler and the extensible profiling runcore.
The Parrot developers held a roadmap meeting, identifying priorities for upcoming Parrot milestones. An important outcome was the change to a shorter 3-month support cycle. Parrot development for 2.0 and 2.3 will focus on the needs of Rakudo *.
The
context_unify3_simple
branch by Vasily Chekalkin landed and merged the Context
and CallSignature
PMCs into CallContext
. The branch is a descendant of context_unify3
that omits some more involved changes to context creation.In the
pmc_freeze_cleanup
branch created by Peter Lobsinger, the Parrot developers are busily cleaning up and merging freeze/thaw serialization and the PBC bytecode format. The new code uses the visit_info
struct as its pivot and keeps out of string internals.François Perrad continued to improve distutils and languages infrastructure.
Bob Kuo, a.k.a. bubaflub, celebrated his new commit bit with a firework of changes, converting many further tests to PIR among other things.
♢
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