import($flag,@args)
use ExportableModule->All;
# or
use ExportableModule-Only => qw(Constraint1 ...);
# or
use ExportableModule-Library;
Exports the constraints to the calling namespace. This includes all libraries in
Declare::Constraints::Simple::Library, that package itself (providing all default constraints) or
Declare::Constraints::Simple itself as a shortcut.
Possible flags are
All Imports all constraints registered in the class and its base classes.
Only
use Declare::Constraints::Simple::Library::Scalar-Only => 'HasLength';
The above line would only import the "HasLength" constraints from the "Scalar" default library. Note
however, that you could also just have said
use Declare::Constraints::Simple-Only => 'HasLength';
as both "::Simple" and "::Simple::Library" work on all default libraries.
Library
You can use this to define your own constraint library. For more information, see
Declare::Constraints::Simple::Library::Base.
_build_handle_map()
Internal method to build constraint-to-class mappings.
_export_all($target,$handle_map)
Internal method. Exports all handles in $handle_map into the $target namespace.
_export_these($target,$handle_map,@constraints)
Internal method. Exports all @constraints from $handle_map into the $target namespace.