[EXPERIMENT] the builtin:: namespace

[rjbs]

In Perl 5.36.0, we added the builtin namespace for new functions that are not always available in every namespace. (They must be imported or called by fully-qualified name.)

[rwp0]

> perl -E 'say for keys %builtin::'
trim
weaken
refaddr
import
is_weak
reftype
created_as_string
is_bool
floor
unweaken
true
ceil
created_as_number
blessed
false
indexed

that's how to list them for those who wonder what functions are available in the new namespace

[leonerd]

The module itself is considered experimental, as is additionally every individual function that it shipped with. Those functions are:

true false is_bool
weaken unweaken is_weak
blessed refaddr reftype
created_as_string created_as_number
ceil floor
trim
indexed

No individual function can be made non-experimental before the builtin namespace mechanism itself has been. However, it may turn out that individual functions can have a longer experimental status once the overall mechanism and most of its functions are declared stable. If that becomes the case, new Experiment issues should be created for each of those functions.

Any newly-added functions should be considered as separate experiments beyond this, with their own lifetimes.

[leonerd]

Additional abilities that would need adding before deëxperimentalizing:

• builtin bundles - a.la. use builtin ':v5.37'
• integration with use VERSION - use v5.37 to imply use builtin ':v5.37'